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Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty
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From: |
Chunguang Li |
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Subject: |
Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent |
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Date: |
Thu, 3 Nov 2016 16:25:30 +0800 (GMT+08:00) |
> -----Original Messages-----
> From: "Dr. David Alan Gilbert" <address@hidden>
> Sent Time: Friday, October 14, 2016
> To: "Chunguang Li" <address@hidden>
> Cc: "Amit Shah" <address@hidden>, address@hidden, address@hidden,
> address@hidden, address@hidden
> Subject: Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as
> dirty after they have been sent
>
> * Chunguang Li (address@hidden) wrote:
> >
> >
> >
> > > -----原始邮件-----
> > > 发件人: "Amit Shah" <address@hidden>
> > > 发送时间: 2016年9月30日 星期五
> > > 收件人: "Chunguang Li" <address@hidden>
> > > 抄送: "Dr. David Alan Gilbert" <address@hidden>, address@hidden,
> > > address@hidden, address@hidden, address@hidden
> > > 主题: Re: Re: [Qemu-devel] Migration dirty bitmap: should only mark pages
> > > as dirty after they have been sent
> > >
> > > On (Mon) 26 Sep 2016 [22:55:01], Chunguang Li wrote:
> > > >
> > > >
> > > >
> > > > > -----原始邮件-----
> > > > > 发件人: "Dr. David Alan Gilbert" <address@hidden>
> > > > > 发送时间: 2016年9月26日 星期一
> > > > > 收件人: "Chunguang Li" <address@hidden>
> > > > > 抄送: address@hidden, address@hidden, address@hidden, address@hidden,
> > > > > address@hidden
> > > > > 主题: Re: [Qemu-devel] Migration dirty bitmap: should only mark pages
> > > > > as dirty after they have been sent
> > > > >
> > > > > * Chunguang Li (address@hidden) wrote:
> > > > > > Hi all!
> > > > > > I have some confusion about the dirty bitmap during migration. I
> > > > > > have digged into the code. I figure out that every now and then
> > > > > > during migration, the dirty bitmap will be grabbed from the kernel
> > > > > > space through ioctl(KVM_GET_DIRTY_LOG), and then be used to update
> > > > > > qemu's dirty bitmap. However I think this mechanism leads to
> > > > > > resendness of some NON-dirty pages.
> > > > > >
> > > > > > Take the first iteration of precopy for instance, during which all
> > > > > > the pages will be sent. Before that during the migration setup, the
> > > > > > ioctl(KVM_GET_DIRTY_LOG) is called once, so the kernel begins to
> > > > > > produce the dirty bitmap from this moment. When the pages "that
> > > > > > haven't been sent" are written, the kernel space marks them as
> > > > > > dirty. However I don't think this is correct, because these pages
> > > > > > will be sent during this and the next iterations with the same
> > > > > > content (if they are not written again after they are sent). It
> > > > > > only makes sense to mark the pages which have already been sent
> > > > > > during one iteration as dirty when they are written.
> > > > > >
> > > > > >
> > > > > > Am I right about this consideration? If I am right, is there some
> > > > > > advice to improve this?
> > > > >
> > > > > I think you're right that this can happen; to clarify I think the
> > > > > case you're talking about is:
> > > > >
> > > > > Iteration 1
> > > > > sync bitmap
> > > > > start sending pages
> > > > > page 'n' is modified - but hasn't been sent yet
> > > > > page 'n' gets sent
> > > > > Iteration 2
> > > > > sync bitmap
> > > > > 'page n is shown as modified'
> > > > > send page 'n' again
> > > > >
> > > >
> > > > Yes，this is right the case I am talking about.
> > > >
> > > > > So you're right that is wasteful; I guess it's more wasteful
> > > > > on big VMs with slow networks where the length of each iteration
> > > > > is large.
> > > >
> > > > I think this is "very" wasteful. Assume the workload writes the pages
> > > > dirty randomly within the guest address space, and the transfer speed
> > > > is constant. Intuitively, I think nearly half of the dirty pages
> > > > produced in Iteration 1 is not really dirty. This means the time of
> > > > Iteration 2 is double of that to send only really dirty pages.
> > >
> > > It makes sense, can you get some perf numbers to show what kinds of
> > > workloads get impacted the most? That would also help us to figure
> > > out what kinds of speed improvements we can expect.
> > >
> > >
> > > Amit
> >
> > I have picked up 6 workloads and got the following statistics numbers
> > of every iteration (except the last stop-copy one) during precopy.
> > These numbers are obtained with the basic precopy migration, without
> > the capabilities like xbzrle or compression, etc. The network for the
> > migration is exclusive, with a separate network for the workloads.
> > They are both gigabit ethernet. I use qemu-2.5.1.
> >
> > Three (booting, idle, web server) of them converged to the stop-copy phase,
> > with the given bandwidth and default downtime (300ms), while the other
> > three (kernel compilation, zeusmp, memcached) did not.
> >
> > One page is "not-really-dirty", if it is written first and is sent later
> > (and not written again after that) during one iteration. I guess this
> > would not happen so often during the other iterations as during the 1st
> > iteration. Because all the pages of the VM are sent to the dest node during
> > the 1st iteration, while during the others, only part of the pages are
> > sent.
> > So I think the "not-really-dirty" pages should be produced mainly during
> > the 1st iteration , and maybe very little during the other iterations.
> >
> > If we could avoid resending the "not-really-dirty" pages, intuitively, I
> > think the time spent on Iteration 2 would be halved. This is a chain
> > reaction,
> > because the dirty pages produced during Iteration 2 is halved, which incurs
> > that the time spent on Iteration 3 is halved, then Iteration 4, 5...
>
> Yes; these numbers don't show how many of them are false dirty though.
>
> One problem is thinking about pages that have been redirtied, if the page is
> dirtied
> after the sync but before the network write then it's the false-dirty that
> you're describing.
>
> However, if the page is being written a few times, and so it would have been
> written
> after the network write then it isn't a false-dirty.
>
> You might be able to figure that out with some kernel tracing of when the
> dirtying
> happens, but it might be easier to write the fix!
>
> Dave
Hi, I have made some new progress now.
To tell how many false dirty pages there are exactly in each iteration, I
malloc a
buffer in memory as big as the size of the whole VM memory. When a page is
transferred to the dest node, it is copied to the buffer; During the next
iteration,
if one page is transferred, it is compared to the old one in the buffer, and the
old one will be replaced for next comparison if it is really dirty. Thus, we
are now
able to get the exact number of false dirty pages.
This time, I use 15 workloads to get the statistic number. They are:
1. 11 benchmarks picked up from cpu2006 benchmark suit. They are all
scientific
computing workloads like Quantum Chromodynamics, Fluid Dynamics, etc. I
pick
up these 11 benchmarks because compared to others, they have bigger memory
occupation and higher memory dirty rate. Thus most of them could not
converge
to stop-and-copy using the default migration speed (32MB/s).
2. kernel compilation
3. idle VM
4. Apache web server which serves static content
(the above workloads are all running in VM with 1 vcpu and 1GB memory, and
the
migration speed is the default 32MB/s)
5. Memcached. The VM has 6 cpu cores and 6GB memory, and 4GB are used as the
cache.
After filling up the 4GB cache, a client writes the cache at a constant
speed
during migration. This time, migration speed has no limit, and is up to
the
capability of 1Gbps Ethernet.
Summarize the results first: (and you can read the precise number below)
1. 4 of these 15 workloads have a big proportion (>60%, even >80% during some
iterations)
of false dirty pages out of all the dirty pages since iteration 2 (and the
big
proportion lasts during the following iterations). They are
cpu2006.zeusmp,
cpu2006.bzip2, cpu2006.mcf, and memcached.
2. 2 workloads (idle, webserver) spend most of the migration time on
iteration 1, even
though the proportion of false dirty pages is big since iteration 2, the
space to
optimize is small.
3. 1 workload (kernel compilation) only have a big proportion during
iteration 2, not
in the other iterations.
4. 8 workloads (the other 8 benchmarks of cpu2006) have little proportion of
false
dirty pages since iteration 2. So the spaces to optimize for them are
small.
Now I want to talk a little more about the reasons why false dirty pages are
produced.
The first reason is what we have discussed before---the mechanism to track the
dirty
pages.
And then I come up with another reason. Here is the situation: a write
operation to one
memory page happens, but it doesn't change any content of the page. So it's
"write but
not dirty", and kernel still marks it as dirty. One guy in our lab has done
some experiments
to figure out the proportion of "write but not dirty" operations, and he uses
the cpu2006
benchmark suit. According to his results, general workloads has a little
proportion (<10%)
of "write but not dirty" out of all the write operations, while few workloads
have higher
proportion (one even as high as 50%). Now we are not sure why "write but not
dirty" would
happen, it just happened.
So these two reasons contribute to the false dirty pages. To optimize, I
compute and store
the SHA1 hash before transferring each page. Next time, if one page needs
retransmission, its
SHA1 hash is computed again, and compared to the old hash. If the hash is the
same, it's a
false dirty page, and we just skip this page; Otherwise, the page is
transferred, and the new
hash replaces the old one for next comparison.
The reason to use SHA1 hash but not byte-by-byte comparison is the memory
overheads. One SHA1
hash is 20 bytes. So we need extra 20/4096 (<1/200) memory space of the whole
VM memory, which
is relatively small.
As far as I know, SHA1 hash is widely used in the scenes of deduplication for
backup systems.
They have proven that the probability of hash collision is far smaller than
disk hardware fault,
so it's secure hash, that is, if the hashes of two chunks are the same, the
content must be the
same. So I think the SHA1 hash could replace byte-to-byte comparison in the VM
memory scenery.
Then I do the same migration experiments using the SHA1 hash. For the 4
workloads which have
big proportions of false dirty pages, the improvement is remarkable. Without
optimization,
they either can not converge to stop-and-copy, or take a very long time to
complete. With the
SHA1 hash method, all of them now complete in a relatively short time.
For the reason I have talked above, the other workloads don't get notable
improvements from the
optimization. So below, I only show the exact number after optimization for the
4 workloads with
remarkable improvements.
Any comments or suggestions?
Below is the experiments data:
(
"dup" means zero page, this kind of pages takes very little migration time and
network
resources, so they are always not regard as dirty pages in my numbers;
"rd" means really dirty pages;
"fd" means false dirty pages;
The numbers refer to the quantities of pages.
)
------------------The 4 workloads with remarkable improvements (both the
results of original precopy and with optimization are shown)-------------------
1. memcached
----- original pre-copy (can not converge): -----
Iteration 1, duration: 42111 ms , transferred pages: 1568788 (dup:
416239, rd: 1152549, fd: 0) , new dirty pages: 499015 , remaining
dirty pages: 507397
Iteration 2, duration: 17208 ms , transferred pages: 498946 (dup:
5456, rd: 160206, fd: 333284) , new dirty pages: 261237 , remaining dirty
pages: 269688
Iteration 3, duration: 9134 ms , transferred pages: 262377 (dup:
519, rd: 111900, fd: 149958) , new dirty pages: 170281 , remaining dirty
pages: 177592
Iteration 4, duration: 5920 ms , transferred pages: 169966 (dup:
87, rd: 82487, fd: 87392) , new dirty pages: 121154 , remaining dirty
pages: 128780
Iteration 5, duration: 4239 ms , transferred pages: 121551 (dup:
81, rd: 64120, fd: 57350) , new dirty pages: 100976 , remaining dirty
pages: 108205
Iteration 6, duration: 3495 ms , transferred pages: 100353 (dup:
90, rd: 56021, fd: 44242) , new dirty pages: 74547 , remaining dirty
pages: 82399
Iteration 7, duration: 2583 ms , transferred pages: 74160 (dup:
56, rd: 38016, fd: 36088) , new dirty pages: 58209 , remaining dirty
pages: 66448
Iteration 8, duration: 2039 ms , transferred pages: 58534 (dup:
81, rd: 26885, fd: 31568) , new dirty pages: 43511 , remaining dirty
pages: 51425
Iteration 9, duration: 1513 ms , transferred pages: 43484 (dup:
55, rd: 26641, fd: 16788) , new dirty pages: 43722 , remaining dirty
pages: 51663
Iteration 10, duration: 1521 ms , transferred pages: 43676 (dup:
62, rd: 26463, fd: 17151) , new dirty pages: 35347 , remaining dirty
pages: 43334
Iteration 11, duration: 1230 ms , transferred pages: 35287 (dup:
0, rd: 21293, fd: 13994) , new dirty pages: 28851 , remaining dirty
pages: 36898
Iteration 12, duration: 1031 ms , transferred pages: 29651 (dup:
82, rd: 18143, fd: 11426) , new dirty pages: 27062 , remaining dirty
pages: 34309
Iteration 13, duration: 917 ms , transferred pages: 26385 (dup:
56, rd: 14149, fd: 12180) , new dirty pages: 22723 , remaining dirty
pages: 30647
Iteration 14, duration: 762 ms , transferred pages: 21902 (dup:
55, rd: 16355, fd: 5492) , new dirty pages: 18208 , remaining dirty
pages: 26953
Iteration 15, duration: 650 ms , transferred pages: 18636 (dup:
0, rd: 11943, fd: 6693) , new dirty pages: 16085 , remaining dirty
pages: 24402
Iteration 16, duration: 554 ms , transferred pages: 15946 (dup:
56, rd: 9527, fd: 6363) , new dirty pages: 14766 , remaining dirty
pages: 23222
Iteration 17, duration: 538 ms , transferred pages: 15434 (dup:
0, rd: 9779, fd: 5655) , new dirty pages: 13381 , remaining dirty
pages: 21169
Iteration 18, duration: 487 ms , transferred pages: 14089 (dup:
81, rd: 7737, fd: 6271) , new dirty pages: 13325 , remaining dirty
pages: 20405
Iteration 19, duration: 428 ms , transferred pages: 12232 (dup:
0, rd: 8488, fd: 3744) , new dirty pages: 10274 , remaining dirty
pages: 18447
Iteration 20, duration: 377 ms , transferred pages: 10887 (dup:
56, rd: 6362, fd: 4469) , new dirty pages: 9708 , remaining dirty
pages: 17268
Iteration 21, duration: 320 ms , transferred pages: 9222 (dup:
0, rd: 5789, fd: 3433) , new dirty pages: 8015 , remaining dirty
pages: 16061
Iteration 22, duration: 268 ms , transferred pages: 7621 (dup:
0, rd: 6204, fd: 1417) , new dirty pages: 7227 , remaining dirty
pages: 15667
Iteration 23, duration: 269 ms , transferred pages: 7813 (dup:
56, rd: 4410, fd: 3347) , new dirty pages: 7591 , remaining dirty
pages: 15445
Iteration 24, duration: 271 ms , transferred pages: 7749 (dup:
0, rd: 4565, fd: 3184) , new dirty pages: 15126 , remaining dirty
pages: 22822
Iteration 25, duration: 549 ms , transferred pages: 15818 (dup:
60, rd: 10545, fd: 5213) , new dirty pages: 14559 , remaining dirty
pages: 21563
Iteration 26, duration: 499 ms , transferred pages: 14281 (dup:
3, rd: 8760, fd: 5518) , new dirty pages: 11947 , remaining dirty
pages: 19229
Iteration 27, duration: 376 ms , transferred pages: 10823 (dup:
25, rd: 6550, fd: 4248) , new dirty pages: 8561 , remaining dirty
pages: 16967
Iteration 28, duration: 324 ms , transferred pages: 9350 (dup:
31, rd: 5292, fd: 4027) , new dirty pages: 8655 , remaining dirty
pages: 16272
Iteration 29, duration: 274 ms , transferred pages: 7813 (dup:
0, rd: 6088, fd: 1725) , new dirty pages: 6300 , remaining dirty
pages: 14759
Iteration 30, duration: 218 ms , transferred pages: 6340 (dup:
45, rd: 3196, fd: 3099) , new dirty pages: 5143 , remaining dirty
pages: 13562
----- after optimization: -----
Iteration 1, duration: 40664 ms , transferred pages: 1569037 (dup:
405940, rd: 1163097) , new dirty pages: 506846 , remaining dirty pages:
514979
Iteration 2, duration: 8032 ms , transferred pages: 161130 (dup:
4007, rd: 157123) , new dirty pages: 153479 , remaining dirty pages:
153479
Iteration 3, duration: 2620 ms , transferred pages: 65260 (dup:
20, rd: 65240) , new dirty pages: 64014 , remaining dirty pages: 67100
Iteration 4, duration: 1160 ms , transferred pages: 30227 (dup:
60, rd: 30167) , new dirty pages: 34031 , remaining dirty pages: 41414
Iteration 5, duration: 648 ms , transferred pages: 18700 (dup:
56, rd: 18644) , new dirty pages: 18375 , remaining dirty pages: 25536
Iteration 6, duration: 389 ms , transferred pages: 11399 (dup:
55, rd: 11344) , new dirty pages: 12536 , remaining dirty pages: 17516
Iteration 7, duration: 292 ms , transferred pages: 8197 (dup:
0, rd: 8197) , new dirty pages: 8387 , remaining dirty pages: 16802
Iteration 8, duration: 171 ms , transferred pages: 4931 (dup:
39, rd: 4892) , new dirty pages: 6182 , remaining dirty pages: 14060
Iteration 9, duration: 163 ms , transferred pages: 4355 (dup:
16, rd: 4339) , new dirty pages: 5530 , remaining dirty pages: 11973
Iteration 10, duration: 104 ms , transferred pages: 3266 (dup:
0, rd: 3266) , new dirty pages: 2893 , remaining dirty pages: 11014
Iteration 11, duration: 52 ms , transferred pages: 1153 (dup:
0, rd: 1153) , new dirty pages: 1586 , remaining dirty pages: 10516
Iteration 12, duration: 52 ms , transferred pages: 1921 (dup:
39, rd: 1882) , new dirty pages: 1619 , remaining dirty pages: 8842
Iteration 13, duration: 62 ms , transferred pages: 1537 (dup:
0, rd: 1537) , new dirty pages: 2052 , remaining dirty pages: 8871
Iteration 14, duration: 58 ms , transferred pages: 1665 (dup:
0, rd: 1665) , new dirty pages: 1947 , remaining dirty pages: 7989
Iteration 15, duration: 2 ms , transferred pages: 0 (dup:
0, rd: 0) , new dirty pages: 0 , remaining dirty pages: 7989
total time: 54693 milliseconds
2. cpu2006.zeusmp
----- original pre-copy (can not converge): -----
Iteration 1, duration: 21112 ms , transferred pages: 266450 (dup:
93385, rd: 173065, fd: 0) , new dirty pages: 127866 , remaining
dirty pages: 127866
Iteration 2, duration: 6192 ms , transferred pages: 125662 (dup:
75762, rd: 17389, fd: 32511) , new dirty pages: 131655 , remaining
dirty pages: 133859
Iteration 3, duration: 6699 ms , transferred pages: 131937 (dup:
77298, rd: 20320, fd: 34319) , new dirty pages: 121027 , remaining
dirty pages: 122949
Iteration 4, duration: 5999 ms , transferred pages: 122512 (dup:
73588, rd: 17236, fd: 31688) , new dirty pages: 122759 , remaining
dirty pages: 123196
Iteration 5, duration: 5804 ms , transferred pages: 122717 (dup:
75436, rd: 19016, fd: 28265) , new dirty pages: 123697 , remaining
dirty pages: 124176
Iteration 6, duration: 5698 ms , transferred pages: 123708 (dup:
77249, rd: 18022, fd: 28437) , new dirty pages: 121838 , remaining
dirty pages: 122306
Iteration 7, duration: 5515 ms , transferred pages: 122306 (dup:
76727, rd: 14819, fd: 30760) , new dirty pages: 122382 , remaining
dirty pages: 122382
Iteration 8, duration: 6086 ms , transferred pages: 120825 (dup:
71834, rd: 15987, fd: 33004) , new dirty pages: 121587 , remaining
dirty pages: 123144
Iteration 9, duration: 5899 ms , transferred pages: 120964 (dup:
72860, rd: 18191, fd: 29913) , new dirty pages: 120391 , remaining
dirty pages: 122571
Iteration 10, duration: 5801 ms , transferred pages: 121425 (dup:
74140, rd: 20722, fd: 26563) , new dirty pages: 122302 , remaining
dirty pages: 123448
Iteration 11, duration: 5909 ms , transferred pages: 123448 (dup:
74735, rd: 19678, fd: 29035) , new dirty pages: 123258 , remaining
dirty pages: 123258
Iteration 12, duration: 6293 ms , transferred pages: 121211 (dup:
70442, rd: 18128, fd: 32641) , new dirty pages: 123623 , remaining
dirty pages: 125670
Iteration 13, duration: 6398 ms , transferred pages: 124897 (dup:
72701, rd: 21134, fd: 31062) , new dirty pages: 122355 , remaining
dirty pages: 123128
Iteration 14, duration: 6301 ms , transferred pages: 121893 (dup:
70514, rd: 23470, fd: 27909) , new dirty pages: 120980 , remaining
dirty pages: 122215
Iteration 15, duration: 6304 ms , transferred pages: 121389 (dup:
70005, rd: 21731, fd: 29653) , new dirty pages: 121628 , remaining
dirty pages: 122454
Iteration 16, duration: 6398 ms , transferred pages: 122164 (dup:
69962, rd: 24376, fd: 27826) , new dirty pages: 122246 , remaining
dirty pages: 122536
Iteration 17, duration: 6201 ms , transferred pages: 121548 (dup:
70984, rd: 23915, fd: 26649) , new dirty pages: 121460 , remaining
dirty pages: 122448
Iteration 18, duration: 6401 ms , transferred pages: 122272 (dup:
70072, rd: 22261, fd: 29939) , new dirty pages: 123518 , remaining
dirty pages: 123694
Iteration 19, duration: 7003 ms , transferred pages: 121873 (dup:
64754, rd: 27325, fd: 29794) , new dirty pages: 120568 , remaining
dirty pages: 122389
Iteration 20, duration: 6400 ms , transferred pages: 121422 (dup:
69221, rd: 25300, fd: 26901) , new dirty pages: 121229 , remaining
dirty pages: 122196
Iteration 21, duration: 6703 ms , transferred pages: 119895 (dup:
65232, rd: 25877, fd: 28786) , new dirty pages: 123284 , remaining
dirty pages: 125585
Iteration 22, duration: 6902 ms , transferred pages: 123884 (dup:
67582, rd: 29020, fd: 27282) , new dirty pages: 122057 , remaining
dirty pages: 123758
Iteration 23, duration: 6800 ms , transferred pages: 122010 (dup:
66529, rd: 30644, fd: 24837) , new dirty pages: 120916 , remaining
dirty pages: 122664
Iteration 24, duration: 7202 ms , transferred pages: 121951 (dup:
63188, rd: 31105, fd: 27658) , new dirty pages: 122715 , remaining
dirty pages: 123428
Iteration 25, duration: 7202 ms , transferred pages: 122919 (dup:
64161, rd: 32063, fd: 26695) , new dirty pages: 123180 , remaining
dirty pages: 123689
Iteration 26, duration: 7404 ms , transferred pages: 123092 (dup:
62694, rd: 33459, fd: 26939) , new dirty pages: 122149 , remaining
dirty pages: 122746
Iteration 27, duration: 7205 ms , transferred pages: 120427 (dup:
61664, rd: 34344, fd: 24419) , new dirty pages: 120299 , remaining
dirty pages: 122618
Iteration 28, duration: 7100 ms , transferred pages: 121074 (dup:
63130, rd: 32403, fd: 25541) , new dirty pages: 122984 , remaining
dirty pages: 124528
Iteration 29, duration: 7904 ms , transferred pages: 124060 (dup:
59564, rd: 35631, fd: 28865) , new dirty pages: 127080 , remaining
dirty pages: 127548
Iteration 30, duration: 7906 ms , transferred pages: 127518 (dup:
63029, rd: 34416, fd: 30073) , new dirty pages: 125028 , remaining
dirty pages: 125058
----- after optimization: -----
Iteration 1, duration: 21601 ms , transferred pages: 266450 (dup:
89731, rd: 176719) , new dirty pages: 139843 , remaining dirty pages:
139843
Iteration 2, duration: 1747 ms , transferred pages: 92077 (dup:
78364, rd: 13713) , new dirty pages: 90945 , remaining dirty pages:
90945
Iteration 3, duration: 1592 ms , transferred pages: 62253 (dup:
49435, rd: 12818) , new dirty pages: 76929 , remaining dirty pages:
76929
Iteration 4, duration: 992 ms , transferred pages: 44837 (dup:
37886, rd: 6951) , new dirty pages: 71331 , remaining dirty pages:
72916
Iteration 5, duration: 998 ms , transferred pages: 55229 (dup:
47150, rd: 8079) , new dirty pages: 21703 , remaining dirty pages:
23302
Iteration 6, duration: 211 ms , transferred pages: 20337 (dup:
18516, rd: 1821) , new dirty pages: 14500 , remaining dirty pages:
14500
Iteration 7, duration: 31 ms , transferred pages: 12933 (dup:
12627, rd: 306) , new dirty pages: 1520 , remaining dirty pages:
1520
Iteration 8, duration: 30 ms , transferred pages: 0 (dup:
0, rd: 0) , new dirty pages: 4 , remaining dirty pages: 1524
total time: 27225 milliseconds
3. cpu2006.bzip2
----- original pre-copy: -----
Iteration 1, duration: 18306 ms , transferred pages: 266450 (dup:
116569, rd: 149881, fd: 0) , new dirty pages: 106299 , remaining
dirty pages: 106299
Iteration 2, duration: 10694 ms , transferred pages: 104611 (dup:
17550, rd: 10536, fd: 76525) , new dirty pages: 34394 , remaining
dirty pages: 36082
Iteration 3, duration: 2998 ms , transferred pages: 34442 (dup:
9924, rd: 12254, fd: 12264) , new dirty pages: 6419 , remaining dirty
pages: 8059
Iteration 4, duration: 699 ms , transferred pages: 5748 (dup:
22, rd: 2583, fd: 3143) , new dirty pages: 1226 , remaining dirty
pages: 3537
Iteration 5, duration: 200 ms , transferred pages: 1636 (dup:
0, rd: 1194, fd: 442) , new dirty pages: 478 , remaining dirty
pages: 2379
Iteration 6, duration: 1 ms , transferred pages: 0 (dup:
0, rd: 0, fd: 0) , new dirty pages: 0 , remaining dirty
pages: 2379
----- after optimization: -----
Iteration 1, duration: 13995 ms , transferred pages: 266314 (dup:
152118, rd: 114196) , new dirty pages: 97009 , remaining dirty pages:
97145
Iteration 2, duration: 1215 ms , transferred pages: 33400 (dup:
26745, rd: 6655) , new dirty pages: 12866 , remaining dirty pages:
14017
Iteration 3, duration: 701 ms , transferred pages: 5774 (dup:
48, rd: 5726) , new dirty pages: 6342 , remaining dirty pages: 8761
Iteration 4, duration: 500 ms , transferred pages: 4111 (dup:
21, rd: 4090) , new dirty pages: 4311 , remaining dirty pages: 6485
Iteration 5, duration: 400 ms , transferred pages: 3273 (dup:
1, rd: 3272) , new dirty pages: 3034 , remaining dirty pages: 5431
Iteration 6, duration: 301 ms , transferred pages: 2454 (dup:
0, rd: 2454) , new dirty pages: 2094 , remaining dirty pages: 4472
Iteration 7, duration: 299 ms , transferred pages: 2454 (dup:
0, rd: 2454) , new dirty pages: 2066 , remaining dirty pages: 4082
Iteration 8, duration: 202 ms , transferred pages: 1636 (dup:
0, rd: 1636) , new dirty pages: 2881 , remaining dirty pages: 4648
Iteration 9, duration: 300 ms , transferred pages: 2454 (dup:
0, rd: 2454) , new dirty pages: 4775 , remaining dirty pages: 6778
Iteration 10, duration: 400 ms , transferred pages: 3281 (dup:
9, rd: 3272) , new dirty pages: 3757 , remaining dirty pages: 5576
Iteration 11, duration: 401 ms , transferred pages: 3279 (dup:
7, rd: 3272) , new dirty pages: 6980 , remaining dirty pages: 8906
Iteration 12, duration: 500 ms , transferred pages: 7118 (dup:
3035, rd: 4083) , new dirty pages: 10774 , remaining dirty pages:
11922
Iteration 13, duration: 116 ms , transferred pages: 11706 (dup:
10152, rd: 1554) , new dirty pages: 1326 , remaining dirty pages:
1326
Iteration 14, duration: 117 ms , transferred pages: 0 (dup:
0, rd: 0) , new dirty pages: 0 , remaining dirty pages: 1326
total time: 19479 milliseconds
4. cpu2006.mcf
----- original pre-copy: -----
Iteration 1, duration: 31711 ms , transferred pages: 266450 (dup:
6925, rd: 259525, fd: 0) , new dirty pages: 244403 , remaining dirty
pages: 244403
Iteration 2, duration: 29603 ms , transferred pages: 242275 (dup:
377, rd: 224001, fd: 17897) , new dirty pages: 227335 , remaining dirty
pages: 229463
Iteration 3, duration: 27806 ms , transferred pages: 227573 (dup:
169, rd: 65681, fd: 161723) , new dirty pages: 195593 , remaining dirty
pages: 197483
Iteration 4, duration: 23907 ms , transferred pages: 195543 (dup:
41, rd: 39838, fd: 155664) , new dirty pages: 215066 , remaining dirty
pages: 217006
Iteration 5, duration: 26305 ms , transferred pages: 215289 (dup:
155, rd: 33082, fd: 182052) , new dirty pages: 111098 , remaining dirty
pages: 112815
Iteration 6, duration: 13502 ms , transferred pages: 110452 (dup:
22, rd: 26793, fd: 83637) , new dirty pages: 161054 , remaining dirty
pages: 163417
Iteration 7, duration: 19705 ms , transferred pages: 161266 (dup:
120, rd: 33818, fd: 127328) , new dirty pages: 220562 , remaining dirty
pages: 222713
Iteration 8, duration: 27003 ms , transferred pages: 220881 (dup:
21, rd: 215721, fd: 5139) , new dirty pages: 219787 , remaining dirty
pages: 221619
Iteration 9, duration: 26802 ms , transferred pages: 219248 (dup:
24, rd: 84648, fd: 134576) , new dirty pages: 207959 , remaining dirty
pages: 210330
Iteration 10, duration: 25411 ms , transferred pages: 207916 (dup:
144, rd: 35842, fd: 171930) , new dirty pages: 144442 , remaining dirty
pages: 146856
Iteration 11, duration: 17714 ms , transferred pages: 144804 (dup:
18, rd: 25414, fd: 119372) , new dirty pages: 205127 , remaining dirty
pages: 207179
Iteration 12, duration: 25112 ms , transferred pages: 205446 (dup:
128, rd: 23197, fd: 182121) , new dirty pages: 167319 , remaining dirty
pages: 169052
Iteration 13, duration: 20411 ms , transferred pages: 166886 (dup:
14, rd: 21960, fd: 144912) , new dirty pages: 221592 , remaining dirty
pages: 223758
Iteration 14, duration: 27126 ms , transferred pages: 221800 (dup:
122, rd: 42368, fd: 179310) , new dirty pages: 233630 , remaining dirty
pages: 235588
Iteration 15, duration: 28517 ms , transferred pages: 233321 (dup:
191, rd: 222528, fd: 10602) , new dirty pages: 224282 , remaining dirty
pages: 226549
Iteration 16, duration: 27422 ms , transferred pages: 224187 (dup:
55, rd: 45773, fd: 178359) , new dirty pages: 209815 , remaining dirty
pages: 212177
Iteration 17, duration: 25723 ms , transferred pages: 210260 (dup:
34, rd: 79405, fd: 130821) , new dirty pages: 220297 , remaining dirty
pages: 222214
Iteration 18, duration: 26920 ms , transferred pages: 220056 (dup:
14, rd: 214128, fd: 5914) , new dirty pages: 192015 , remaining dirty
pages: 194173
Iteration 19, duration: 23520 ms , transferred pages: 192239 (dup:
9, rd: 25140, fd: 167090) , new dirty pages: 96450 , remaining dirty
pages: 98384
Iteration 20, duration: 11805 ms , transferred pages: 96538 (dup:
14, rd: 7424, fd: 89100) , new dirty pages: 6978 , remaining dirty
pages: 8824
Iteration 21, duration: 799 ms , transferred pages: 6545 (dup:
1, rd: 1802, fd: 4742) , new dirty pages: 138 , remaining dirty
pages: 2417
Iteration 22, duration: 1 ms , transferred pages: 0 (dup:
0, rd: 0, fd: 0) , new dirty pages: 0 , remaining dirty
pages: 2417
----- after optimization: -----
Iteration 1, duration: 31711 ms , transferred pages: 266450 (dup:
6831, rd: 259619) , new dirty pages: 240209 , remaining dirty pages:
240209
Iteration 2, duration: 6250 ms , transferred pages: 51244 (dup:
211, rd: 51033) , new dirty pages: 226651 , remaining dirty pages: 228571
Iteration 3, duration: 4395 ms , transferred pages: 36008 (dup:
80, rd: 35928) , new dirty pages: 110719 , remaining dirty pages: 111478
Iteration 4, duration: 3390 ms , transferred pages: 28068 (dup:
28, rd: 28040) , new dirty pages: 185172 , remaining dirty pages: 185172
Iteration 5, duration: 2986 ms , transferred pages: 23780 (dup:
45, rd: 23735) , new dirty pages: 64357 , remaining dirty pages: 66305
Iteration 6, duration: 2727 ms , transferred pages: 22800 (dup:
12, rd: 22788) , new dirty pages: 61675 , remaining dirty pages: 61675
Iteration 7, duration: 2372 ms , transferred pages: 18943 (dup:
13, rd: 18930) , new dirty pages: 55144 , remaining dirty pages: 55265
Iteration 8, duration: 2100 ms , transferred pages: 17189 (dup:
11, rd: 17178) , new dirty pages: 55244 , remaining dirty pages: 55668
Iteration 9, duration: 2003 ms , transferred pages: 16371 (dup:
11, rd: 16360) , new dirty pages: 107058 , remaining dirty pages: 108014
Iteration 10, duration: 2132 ms , transferred pages: 17825 (dup:
24, rd: 17801) , new dirty pages: 126214 , remaining dirty pages: 126214
Iteration 11, duration: 2229 ms , transferred pages: 18156 (dup:
22, rd: 18134) , new dirty pages: 65725 , remaining dirty pages: 65725
Iteration 12, duration: 2315 ms , transferred pages: 18651 (dup:
21, rd: 18630) , new dirty pages: 52575 , remaining dirty pages: 53903
Iteration 13, duration: 2147 ms , transferred pages: 17435 (dup:
16, rd: 17419) , new dirty pages: 46652 , remaining dirty pages: 47260
Iteration 14, duration: 2000 ms , transferred pages: 16371 (dup:
11, rd: 16360) , new dirty pages: 42721 , remaining dirty pages: 43266
Iteration 15, duration: 1901 ms , transferred pages: 15552 (dup:
10, rd: 15542) , new dirty pages: 38593 , remaining dirty pages: 40792
Iteration 16, duration: 1801 ms , transferred pages: 14735 (dup:
11, rd: 14724) , new dirty pages: 54252 , remaining dirty pages: 55639
Iteration 17, duration: 1708 ms , transferred pages: 13860 (dup:
2, rd: 13858) , new dirty pages: 72379 , remaining dirty pages: 74170
Iteration 18, duration: 1923 ms , transferred pages: 15442 (dup:
12, rd: 15430) , new dirty pages: 101911 , remaining dirty pages: 103547
Iteration 19, duration: 2311 ms , transferred pages: 18823 (dup:
9, rd: 18814) , new dirty pages: 80534 , remaining dirty pages: 82521
Iteration 20, duration: 2081 ms , transferred pages: 17156 (dup:
34, rd: 17122) , new dirty pages: 36054 , remaining dirty pages: 36054
Iteration 21, duration: 1665 ms , transferred pages: 13777 (dup:
10, rd: 13767) , new dirty pages: 29624 , remaining dirty pages: 29624
Iteration 22, duration: 1657 ms , transferred pages: 13290 (dup:
7, rd: 13283) , new dirty pages: 25949 , remaining dirty pages: 28265
Iteration 23, duration: 1599 ms , transferred pages: 13088 (dup:
0, rd: 13088) , new dirty pages: 22356 , remaining dirty pages: 24813
Iteration 24, duration: 1500 ms , transferred pages: 12280 (dup:
10, rd: 12270) , new dirty pages: 21181 , remaining dirty pages: 22608
Iteration 25, duration: 1400 ms , transferred pages: 11457 (dup:
5, rd: 11452) , new dirty pages: 18657 , remaining dirty pages: 20311
Iteration 26, duration: 1200 ms , transferred pages: 9822 (dup:
6, rd: 9816) , new dirty pages: 15690 , remaining dirty pages: 17294
Iteration 27, duration: 1201 ms , transferred pages: 9822 (dup:
6, rd: 9816) , new dirty pages: 14810 , remaining dirty pages: 15936
Iteration 28, duration: 1000 ms , transferred pages: 8183 (dup:
3, rd: 8180) , new dirty pages: 15387 , remaining dirty pages: 16423
Iteration 29, duration: 900 ms , transferred pages: 7372 (dup:
10, rd: 7362) , new dirty pages: 13303 , remaining dirty pages: 15292
Iteration 30, duration: 1000 ms , transferred pages: 8181 (dup:
1, rd: 8180) , new dirty pages: 17879 , remaining dirty pages: 18457
Iteration 31, duration: 951 ms , transferred pages: 8140 (dup:
9, rd: 8131) , new dirty pages: 21738 , remaining dirty pages: 23304
Iteration 32, duration: 946 ms , transferred pages: 6946 (dup:
1, rd: 6945) , new dirty pages: 15815 , remaining dirty pages: 15815
Iteration 33, duration: 747 ms , transferred pages: 6192 (dup:
0, rd: 6192) , new dirty pages: 6249 , remaining dirty pages: 7670
Iteration 34, duration: 501 ms , transferred pages: 4090 (dup:
0, rd: 4090) , new dirty pages: 6163 , remaining dirty pages: 8422
Iteration 35, duration: 600 ms , transferred pages: 4910 (dup:
2, rd: 4908) , new dirty pages: 3673 , remaining dirty pages: 5222
Iteration 36, duration: 300 ms , transferred pages: 2454 (dup:
0, rd: 2454) , new dirty pages: 2132 , remaining dirty pages: 4337
Iteration 37, duration: 200 ms , transferred pages: 1637 (dup:
1, rd: 1636) , new dirty pages: 544 , remaining dirty pages: 2251
Iteration 38, duration: 0 ms , transferred pages: 0 (dup:
0, rd: 0) , new dirty pages: 0 , remaining dirty pages: 2251
total time: 97919 milliseconds
------------------The other 11 workloads without notable improvements (only the
result of original precopy is shown)-------------------
5. idle
Iteration 1, duration: 14702 ms , transferred pages: 266450 (dup:
146393, rd: 120057, fd: 0) , new dirty pages: 14595 , remaining
dirty pages: 14595
Iteration 2, duration: 1592 ms , transferred pages: 12412 (dup:
103, rd: 3280, fd: 9029) , new dirty pages: 218 , remaining dirty
pages: 2401
Iteration 3, duration: 0 ms , transferred pages: 0 (dup:
0, rd: 0, fd: 0) , new dirty pages: 0 , remaining dirty
pages: 2401
6. kernel compilation (can not converge)
Iteration 1, duration: 20607 ms , transferred pages: 266450 (dup:
97552, rd: 168898, fd: 0) , new dirty pages: 19293 , remaining
dirty pages: 19293
Iteration 2, duration: 2092 ms , transferred pages: 17176 (dup:
597, rd: 8625, fd: 7954) , new dirty pages: 8318 , remaining dirty
pages: 10435
Iteration 3, duration: 1000 ms , transferred pages: 8484 (dup:
304, rd: 6256, fd: 1924) , new dirty pages: 8736 , remaining dirty
pages: 10687
Iteration 4, duration: 1000 ms , transferred pages: 8435 (dup:
255, rd: 7089, fd: 1091) , new dirty pages: 7627 , remaining dirty
pages: 9879
Iteration 5, duration: 900 ms , transferred pages: 7553 (dup:
191, rd: 5602, fd: 1760) , new dirty pages: 7287 , remaining dirty
pages: 9613
Iteration 6, duration: 900 ms , transferred pages: 7620 (dup:
258, rd: 5761, fd: 1601) , new dirty pages: 8958 , remaining dirty
pages: 10951
Iteration 7, duration: 1099 ms , transferred pages: 9309 (dup:
311, rd: 8051, fd: 947) , new dirty pages: 7189 , remaining dirty
pages: 8831
Iteration 8, duration: 800 ms , transferred pages: 6832 (dup:
288, rd: 5717, fd: 827) , new dirty pages: 5782 , remaining dirty
pages: 7781
Iteration 9, duration: 701 ms , transferred pages: 5875 (dup:
149, rd: 4005, fd: 1721) , new dirty pages: 4587 , remaining dirty
pages: 6493
Iteration 10, duration: 500 ms , transferred pages: 4234 (dup:
144, rd: 3057, fd: 1033) , new dirty pages: 7352 , remaining dirty
pages: 9611
Iteration 11, duration: 900 ms , transferred pages: 7759 (dup:
397, rd: 6563, fd: 799) , new dirty pages: 6686 , remaining dirty
pages: 8538
Iteration 12, duration: 800 ms , transferred pages: 6808 (dup:
264, rd: 6017, fd: 527) , new dirty pages: 6871 , remaining dirty
pages: 8601
Iteration 13, duration: 800 ms , transferred pages: 6775 (dup:
231, rd: 5722, fd: 822) , new dirty pages: 7540 , remaining dirty
pages: 9366
Iteration 14, duration: 900 ms , transferred pages: 7507 (dup:
145, rd: 5900, fd: 1462) , new dirty pages: 7581 , remaining dirty
pages: 9440
Iteration 15, duration: 900 ms , transferred pages: 7630 (dup:
268, rd: 6211, fd: 1151) , new dirty pages: 7268 , remaining dirty
pages: 9078
Iteration 16, duration: 800 ms , transferred pages: 6759 (dup:
215, rd: 5763, fd: 781) , new dirty pages: 6861 , remaining dirty
pages: 9180
Iteration 17, duration: 800 ms , transferred pages: 6838 (dup:
294, rd: 6037, fd: 507) , new dirty pages: 6196 , remaining dirty
pages: 8538
Iteration 18, duration: 800 ms , transferred pages: 6852 (dup:
308, rd: 4905, fd: 1639) , new dirty pages: 5947 , remaining dirty
pages: 7633
Iteration 19, duration: 700 ms , transferred pages: 5919 (dup:
193, rd: 4853, fd: 873) , new dirty pages: 5861 , remaining dirty
pages: 7575
Iteration 20, duration: 600 ms , transferred pages: 5284 (dup:
376, rd: 4408, fd: 500) , new dirty pages: 5206 , remaining dirty
pages: 7497
Iteration 21, duration: 600 ms , transferred pages: 5147 (dup:
239, rd: 4308, fd: 600) , new dirty pages: 5031 , remaining dirty
pages: 7381
Iteration 22, duration: 599 ms , transferred pages: 5064 (dup:
156, rd: 4026, fd: 882) , new dirty pages: 5601 , remaining dirty
pages: 7918
Iteration 23, duration: 702 ms , transferred pages: 5965 (dup:
239, rd: 5028, fd: 698) , new dirty pages: 6079 , remaining dirty
pages: 8032
Iteration 24, duration: 700 ms , transferred pages: 6175 (dup:
449, rd: 5146, fd: 580) , new dirty pages: 10932 , remaining dirty
pages: 12789
Iteration 25, duration: 1300 ms , transferred pages: 10936 (dup:
302, rd: 6205, fd: 4429) , new dirty pages: 8713 , remaining dirty
pages: 10566
Iteration 26, duration: 1000 ms , transferred pages: 8282 (dup:
102, rd: 5662, fd: 2518) , new dirty pages: 5119 , remaining dirty
pages: 7403
Iteration 27, duration: 600 ms , transferred pages: 5007 (dup:
99, rd: 4099, fd: 809) , new dirty pages: 2226 , remaining dirty
pages: 4622
Iteration 28, duration: 300 ms , transferred pages: 2491 (dup:
37, rd: 1794, fd: 660) , new dirty pages: 6746 , remaining dirty
pages: 8877
Iteration 29, duration: 800 ms , transferred pages: 6757 (dup:
213, rd: 5532, fd: 1012) , new dirty pages: 6070 , remaining dirty
pages: 8190
Iteration 30, duration: 700 ms , transferred pages: 6052 (dup:
326, rd: 5107, fd: 619) , new dirty pages: 5177 , remaining dirty
pages: 7315
7. web server
Iteration 1, duration: 20902 ms , transferred pages: 266450 (dup:
95497, rd: 170953, fd: 0) , new dirty pages: 8528 , remaining
dirty pages: 8528
Iteration 2, duration: 796 ms , transferred pages: 6472 (dup:
131, rd: 1885, fd: 4456) , new dirty pages: 650 , remaining dirty
pages: 2706
Iteration 3, duration: 100 ms , transferred pages: 818 (dup:
0, rd: 383, fd: 435) , new dirty pages: 328 , remaining dirty
pages: 2216
Iteration 4, duration: 0 ms , transferred pages: 0 (dup:
0, rd: 0, fd: 0) , new dirty pages: 0 , remaining dirty
pages: 2216
8. cpu2006.bwaves (can not converge)
Iteration 1, duration: 31715 ms , transferred pages: 266450 (dup:
6766, rd: 259684, fd: 0) , new dirty pages: 242702 , remaining dirty
pages: 242702
Iteration 2, duration: 29397 ms , transferred pages: 240508 (dup:
405, rd: 225588, fd: 14515) , new dirty pages: 230889 , remaining dirty
pages: 233083
Iteration 3, duration: 28205 ms , transferred pages: 230858 (dup:
182, rd: 214596, fd: 16080) , new dirty pages: 226998 , remaining dirty
pages: 229223
Iteration 4, duration: 27805 ms , transferred pages: 227574 (dup:
170, rd: 217045, fd: 10359) , new dirty pages: 227360 , remaining dirty
pages: 229009
Iteration 5, duration: 27703 ms , transferred pages: 226786 (dup:
200, rd: 212130, fd: 14456) , new dirty pages: 225885 , remaining dirty
pages: 228108
Iteration 6, duration: 27600 ms , transferred pages: 225923 (dup:
155, rd: 215503, fd: 10265) , new dirty pages: 223555 , remaining dirty
pages: 225740
Iteration 7, duration: 27309 ms , transferred pages: 223574 (dup:
260, rd: 215641, fd: 7673) , new dirty pages: 231975 , remaining dirty
pages: 234141
Iteration 8, duration: 28403 ms , transferred pages: 232397 (dup:
85, rd: 214086, fd: 18226) , new dirty pages: 222170 , remaining dirty
pages: 223914
Iteration 9, duration: 27105 ms , transferred pages: 221809 (dup:
131, rd: 214988, fd: 6690) , new dirty pages: 230065 , remaining dirty
pages: 232170
Iteration 10, duration: 28104 ms , transferred pages: 230201 (dup:
343, rd: 213531, fd: 16327) , new dirty pages: 227590 , remaining dirty
pages: 229559
Iteration 11, duration: 27801 ms , transferred pages: 227717 (dup:
313, rd: 221408, fd: 5996) , new dirty pages: 228457 , remaining dirty
pages: 230299
Iteration 12, duration: 27916 ms , transferred pages: 228560 (dup:
338, rd: 219660, fd: 8562) , new dirty pages: 238326 , remaining dirty
pages: 240065
9. cpu2006.lbm (can not converge)
Iteration 1, duration: 31012 ms , transferred pages: 266450 (dup:
12253, rd: 254197, fd: 0) , new dirty pages: 108960 , remaining
dirty pages: 108960
Iteration 2, duration: 13095 ms , transferred pages: 106522 (dup:
3, rd: 102045, fd: 4474) , new dirty pages: 129292 , remaining dirty
pages: 131730
Iteration 3, duration: 15802 ms , transferred pages: 129688 (dup:
444, rd: 110860, fd: 18384) , new dirty pages: 116682 , remaining dirty
pages: 118724
Iteration 4, duration: 14204 ms , transferred pages: 116316 (dup:
160, rd: 104951, fd: 11205) , new dirty pages: 107246 , remaining dirty
pages: 109654
Iteration 5, duration: 13208 ms , transferred pages: 107977 (dup:
1, rd: 101834, fd: 6142) , new dirty pages: 105371 , remaining dirty
pages: 107048
Iteration 6, duration: 12804 ms , transferred pages: 104705 (dup:
1, rd: 99629, fd: 5075) , new dirty pages: 103841 , remaining dirty
pages: 106184
Iteration 7, duration: 12709 ms , transferred pages: 103891 (dup:
5, rd: 99212, fd: 4674) , new dirty pages: 106692 , remaining dirty
pages: 108985
Iteration 8, duration: 13105 ms , transferred pages: 107169 (dup:
11, rd: 100125, fd: 7033) , new dirty pages: 103132 , remaining dirty
pages: 104948
Iteration 9, duration: 12607 ms , transferred pages: 103068 (dup:
0, rd: 99460, fd: 3608) , new dirty pages: 102511 , remaining dirty
pages: 104391
Iteration 10, duration: 12514 ms , transferred pages: 102250 (dup:
0, rd: 99094, fd: 3156) , new dirty pages: 102888 , remaining dirty
pages: 105029
10. cpu2006.astar (can not converge)
Iteration 1, duration: 28402 ms , transferred pages: 266450 (dup:
33770, rd: 232680, fd: 0) , new dirty pages: 62078 , remaining
dirty pages: 62078
Iteration 2, duration: 7393 ms , transferred pages: 60107 (dup:
10, rd: 51722, fd: 8375) , new dirty pages: 48854 , remaining dirty
pages: 50825
Iteration 3, duration: 6001 ms , transferred pages: 49094 (dup:
14, rd: 46540, fd: 2540) , new dirty pages: 48137 , remaining dirty
pages: 49868
Iteration 4, duration: 5800 ms , transferred pages: 47444 (dup:
0, rd: 45389, fd: 2055) , new dirty pages: 49147 , remaining dirty
pages: 51571
Iteration 5, duration: 6102 ms , transferred pages: 49912 (dup:
14, rd: 46216, fd: 3682) , new dirty pages: 55606 , remaining dirty
pages: 57265
Iteration 6, duration: 6699 ms , transferred pages: 54949 (dup:
143, rd: 20745, fd: 34061) , new dirty pages: 9166 , remaining dirty
pages: 11482
Iteration 7, duration: 1200 ms , transferred pages: 9830 (dup:
14, rd: 7011, fd: 2805) , new dirty pages: 8294 , remaining dirty
pages: 9946
Iteration 8, duration: 1000 ms , transferred pages: 8194 (dup:
14, rd: 7178, fd: 1002) , new dirty pages: 5475 , remaining dirty
pages: 7227
Iteration 9, duration: 600 ms , transferred pages: 4908 (dup:
0, rd: 3470, fd: 1438) , new dirty pages: 4175 , remaining dirty
pages: 6494
Iteration 10, duration: 500 ms , transferred pages: 4090 (dup:
0, rd: 3856, fd: 234) , new dirty pages: 4095 , remaining dirty
pages: 6499
Iteration 11, duration: 500 ms , transferred pages: 4090 (dup:
0, rd: 3313, fd: 777) , new dirty pages: 3371 , remaining dirty
pages: 5780
Iteration 12, duration: 502 ms , transferred pages: 4090 (dup:
0, rd: 3823, fd: 267) , new dirty pages: 7518 , remaining dirty
pages: 9208
Iteration 13, duration: 899 ms , transferred pages: 7376 (dup:
14, rd: 6028, fd: 1334) , new dirty pages: 3931 , remaining dirty
pages: 5763
Iteration 14, duration: 500 ms , transferred pages: 4090 (dup:
0, rd: 4078, fd: 12) , new dirty pages: 4346 , remaining dirty
pages: 6019
Iteration 15, duration: 502 ms , transferred pages: 4090 (dup:
0, rd: 3817, fd: 273) , new dirty pages: 3054 , remaining dirty
pages: 4983
Iteration 16, duration: 400 ms , transferred pages: 3272 (dup:
0, rd: 3138, fd: 134) , new dirty pages: 3874 , remaining dirty
pages: 5585
Iteration 17, duration: 399 ms , transferred pages: 3272 (dup:
0, rd: 3248, fd: 24) , new dirty pages: 5285 , remaining dirty
pages: 7598
Iteration 18, duration: 701 ms , transferred pages: 5726 (dup:
0, rd: 4385, fd: 1341) , new dirty pages: 8903 , remaining dirty
pages: 10775
Iteration 19, duration: 1101 ms , transferred pages: 9010 (dup:
12, rd: 5597, fd: 3401) , new dirty pages: 4199 , remaining dirty
pages: 5964
Iteration 20, duration: 500 ms , transferred pages: 4090 (dup:
0, rd: 4078, fd: 12) , new dirty pages: 3829 , remaining dirty
pages: 5703
11. cpu2006.xalancbmk (can not converge)
Iteration 1, duration: 30407 ms , transferred pages: 266450 (dup:
17700, rd: 248750, fd: 0) , new dirty pages: 96169 , remaining
dirty pages: 96169
Iteration 2, duration: 11495 ms , transferred pages: 94164 (dup:
205, rd: 67068, fd: 26891) , new dirty pages: 61766 , remaining dirty
pages: 63771
Iteration 3, duration: 7501 ms , transferred pages: 61471 (dup:
121, rd: 53587, fd: 7763) , new dirty pages: 56569 , remaining dirty
pages: 58869
Iteration 4, duration: 6902 ms , transferred pages: 56461 (dup:
19, rd: 50553, fd: 5889) , new dirty pages: 52181 , remaining dirty
pages: 54589
Iteration 5, duration: 6402 ms , transferred pages: 52459 (dup:
107, rd: 46986, fd: 5366) , new dirty pages: 54051 , remaining dirty
pages: 56181
Iteration 6, duration: 6601 ms , transferred pages: 54003 (dup:
15, rd: 47566, fd: 6422) , new dirty pages: 50844 , remaining dirty
pages: 53022
Iteration 7, duration: 6202 ms , transferred pages: 50723 (dup:
7, rd: 47143, fd: 3573) , new dirty pages: 64880 , remaining dirty
pages: 67179
Iteration 8, duration: 8001 ms , transferred pages: 65447 (dup:
7, rd: 61159, fd: 4281) , new dirty pages: 67854 , remaining dirty
pages: 69586
Iteration 9, duration: 8202 ms , transferred pages: 67444 (dup:
368, rd: 56357, fd: 10719) , new dirty pages: 65178 , remaining dirty
pages: 67320
Iteration 10, duration: 8000 ms , transferred pages: 65455 (dup:
15, rd: 60581, fd: 4859) , new dirty pages: 52421 , remaining dirty
pages: 54286
12. cpu2006.milc (can not converge)
Iteration 1, duration: 31410 ms , transferred pages: 266450 (dup:
9454, rd: 256996, fd: 0) , new dirty pages: 158860 , remaining dirty
pages: 158860
Iteration 2, duration: 19193 ms , transferred pages: 157048 (dup:
150, rd: 96807, fd: 60091) , new dirty pages: 102238 , remaining dirty
pages: 104050
Iteration 3, duration: 12504 ms , transferred pages: 102271 (dup:
21, rd: 95107, fd: 7143) , new dirty pages: 97944 , remaining dirty
pages: 99723
Iteration 4, duration: 11905 ms , transferred pages: 97360 (dup:
18, rd: 93610, fd: 3732) , new dirty pages: 99150 , remaining dirty
pages: 101513
Iteration 5, duration: 12105 ms , transferred pages: 99094 (dup:
116, rd: 94125, fd: 4853) , new dirty pages: 98589 , remaining dirty
pages: 101008
Iteration 6, duration: 12101 ms , transferred pages: 98995 (dup:
17, rd: 94069, fd: 4909) , new dirty pages: 147403 , remaining dirty
pages: 149416
Iteration 7, duration: 18001 ms , transferred pages: 147284 (dup:
44, rd: 135691, fd: 11549) , new dirty pages: 136445 , remaining dirty
pages: 138577
Iteration 8, duration: 16702 ms , transferred pages: 136636 (dup:
30, rd: 130805, fd: 5801) , new dirty pages: 145481 , remaining dirty
pages: 147422
Iteration 9, duration: 17800 ms , transferred pages: 145734 (dup:
130, rd: 133239, fd: 12365) , new dirty pages: 98032 , remaining dirty
pages: 99720
Iteration 10, duration: 11902 ms , transferred pages: 97364 (dup:
22, rd: 93096, fd: 4246) , new dirty pages: 95391 , remaining dirty
pages: 97747
13. cpu2006.cactusADM (can not converge)
Iteration 1, duration: 23508 ms , transferred pages: 266450 (dup:
73568, rd: 192882, fd: 0) , new dirty pages: 123869 , remaining
dirty pages: 123869
Iteration 2, duration: 13989 ms , transferred pages: 121594 (dup:
7874, rd: 81653, fd: 32067) , new dirty pages: 112960 , remaining dirty
pages: 115235
Iteration 3, duration: 13605 ms , transferred pages: 113276 (dup:
2028, rd: 83783, fd: 27465) , new dirty pages: 112314 , remaining dirty
pages: 114273
Iteration 4, duration: 13509 ms , transferred pages: 111935 (dup:
1505, rd: 83535, fd: 26895) , new dirty pages: 114078 , remaining dirty
pages: 116416
Iteration 5, duration: 13810 ms , transferred pages: 114262 (dup:
1378, rd: 84039, fd: 28845) , new dirty pages: 112271 , remaining dirty
pages: 114425
Iteration 6, duration: 13604 ms , transferred pages: 112664 (dup:
1416, rd: 84300, fd: 26948) , new dirty pages: 112903 , remaining dirty
pages: 114664
Iteration 7, duration: 13604 ms , transferred pages: 112655 (dup:
1407, rd: 84027, fd: 27221) , new dirty pages: 110943 , remaining dirty
pages: 112952
Iteration 8, duration: 13406 ms , transferred pages: 110720 (dup:
1108, rd: 84075, fd: 25537) , new dirty pages: 109321 , remaining dirty
pages: 111553
Iteration 9, duration: 13306 ms , transferred pages: 109726 (dup:
932, rd: 83652, fd: 25142) , new dirty pages: 113446 , remaining dirty
pages: 115273
Iteration 10, duration: 13705 ms , transferred pages: 113121 (dup:
1055, rd: 84671, fd: 27395) , new dirty pages: 108776 , remaining dirty
pages: 110928
14. cpu2006.GmesFDTD (can not converge)
Iteration 1, duration: 13303 ms , transferred pages: 266450 (dup:
157809, rd: 108641, fd: 0) , new dirty pages: 226802 , remaining
dirty pages: 226802
Iteration 2, duration: 10797 ms , transferred pages: 226507 (dup:
138637, rd: 61818, fd: 26052) , new dirty pages: 200769 , remaining
dirty pages: 201064
Iteration 3, duration: 8900 ms , transferred pages: 199717 (dup:
127187, rd: 69340, fd: 3190) , new dirty pages: 203436 , remaining
dirty pages: 204783
Iteration 4, duration: 10904 ms , transferred pages: 204127 (dup:
115211, rd: 85767, fd: 3149) , new dirty pages: 198407 , remaining
dirty pages: 199063
Iteration 5, duration: 12109 ms , transferred pages: 198206 (dup:
99435, rd: 96956, fd: 1815) , new dirty pages: 213719 , remaining
dirty pages: 214576
Iteration 6, duration: 16307 ms , transferred pages: 213595 (dup:
80422, rd: 116885, fd: 16288) , new dirty pages: 199637 , remaining
dirty pages: 200618
Iteration 7, duration: 16915 ms , transferred pages: 198289 (dup:
60169, rd: 134208, fd: 3912) , new dirty pages: 199343 , remaining
dirty pages: 201672
Iteration 8, duration: 19518 ms , transferred pages: 200452 (dup:
41014, rd: 156083, fd: 3355) , new dirty pages: 222927 , remaining
dirty pages: 224147
15. cpu2006.wrf (can not converge)
Iteration 1, duration: 18499 ms , transferred pages: 266380 (dup:
115285, rd: 151095, fd: 0) , new dirty pages: 112322 , remaining
dirty pages: 112392
Iteration 2, duration: 9802 ms , transferred pages: 110025 (dup:
29917, rd: 65782, fd: 14326) , new dirty pages: 88855 , remaining
dirty pages: 91222
Iteration 3, duration: 8199 ms , transferred pages: 89761 (dup:
22728, rd: 57262, fd: 9771) , new dirty pages: 58431 , remaining
dirty pages: 59892
Iteration 4, duration: 5603 ms , transferred pages: 58502 (dup:
12716, rd: 41809, fd: 3977) , new dirty pages: 80556 , remaining
dirty pages: 81946
Iteration 5, duration: 7101 ms , transferred pages: 79778 (dup:
21738, rd: 50896, fd: 7144) , new dirty pages: 62592 , remaining
dirty pages: 64760
Iteration 6, duration: 5702 ms , transferred pages: 63388 (dup:
16793, rd: 42726, fd: 3869) , new dirty pages: 80747 , remaining
dirty pages: 82119
Iteration 7, duration: 7000 ms , transferred pages: 80868 (dup:
23652, rd: 52194, fd: 5022) , new dirty pages: 84593 , remaining
dirty pages: 85844
Iteration 8, duration: 7099 ms , transferred pages: 83799 (dup:
25769, rd: 51772, fd: 6258) , new dirty pages: 67951 , remaining
dirty pages: 69996
Iteration 9, duration: 6303 ms , transferred pages: 68478 (dup:
16979, rd: 36490, fd: 15009) , new dirty pages: 81181 , remaining
dirty pages: 82699
Iteration 10, duration: 7000 ms , transferred pages: 80724 (dup:
23503, rd: 52826, fd: 4395) , new dirty pages: 47930 , remaining
dirty pages: 49905
>
> > So I think "booting" and "kernel compilation" should benefit a lot from
> > this
> > improvement. The reason of "kernel compilation" would benefit is that some
> > iterations take around 600ms, and if they are halved into 300ms, then the
> > precopy
> > may have the chance to step into stop and copy phase.
> >
> > On the other hand, "idle" and "web server" would not benefit a lot, because
> > most of the time are spent on the 1st iteration and little on the others.
> >
> > As to the "zeusmp" and "memcached", although the time spent on the other
> > iterations
> > but the 1st one may be halved, they still could not converge to stop and
> > copy
> > with the 300ms downtime.
> >
> > --------------------1 vcpu, 1 GB ram, default bandwidth
> > (32MB/s):------------------
> >
> > 1. booting : begin to migrate when the VM is booting
> >
> > Iteration 1, duration: 6997 ms , transferred pages: 266450 (n:
> > 57269, d: 209181 ) , new dirty pages: 56414 , remaining dirty pages:
> > 56414
> > Iteration 2, duration: 6497 ms , transferred pages: 54008 (n:
> > 52701, d: 1307 ) , new dirty pages: 48053 , remaining dirty pages:
> > 50459
> > Iteration 3, duration: 5800 ms , transferred pages: 48232 (n:
> > 47444, d: 788 ) , new dirty pages: 9129 , remaining dirty pages:
> > 11356
> > Iteration 4, duration: 1100 ms , transferred pages: 9091 (n:
> > 8998, d: 93 ) , new dirty pages: 165 , remaining dirty pages:
> > 2430
> > Iteration 5, duration: 1 ms , transferred pages: 0 (n:
> > 0, d: 0 ) , new dirty pages: 0 , remaining dirty pages:
> > 2430
> > (note: When the workload does converge, the output of the last iteration is
> > "fake". It just indicates that the precopy steps into stop-copy phase now.
> > "n" means "normal pages" and "d" means "duplicate (zero) pages".)
> >
> > 2. idle
> >
> > Iteration 1, duration: 14496 ms , transferred pages: 266450 (n:
> > 118980, d: 147470 ) , new dirty pages: 17398 , remaining dirty pages:
> > 17398
> > Iteration 2, duration: 1896 ms , transferred pages: 14953 (n:
> > 14854, d: 99 ) , new dirty pages: 1849 , remaining dirty pages:
> > 4294
> > Iteration 3, duration: 300 ms , transferred pages: 2454 (n:
> > 2454, d: 0 ) , new dirty pages: 9 , remaining dirty pages:
> > 1849
> > Iteration 4, duration: 1 ms , transferred pages: 0 (n:
> > 0, d: 0 ) , new dirty pages: 0 , remaining dirty pages:
> > 1849
> >
> > 3. kernel compilation (can not converge)
> >
> > Iteration 1, duration: 20700 ms , transferred pages: 266450 (n:
> > 169778, d: 96672 ) , new dirty pages: 40067 , remaining dirty pages:
> > 40067
> > Iteration 2, duration: 4696 ms , transferred pages: 38401 (n:
> > 37787, d: 614 ) , new dirty pages: 8852 , remaining dirty pages:
> > 10518
> > Iteration 3, duration: 1000 ms , transferred pages: 8642 (n:
> > 8180, d: 462 ) , new dirty pages: 6331 , remaining dirty pages:
> > 8207
> > Iteration 4, duration: 700 ms , transferred pages: 6110 (n:
> > 5726, d: 384 ) , new dirty pages: 5242 , remaining dirty pages:
> > 7339
> > Iteration 5, duration: 600 ms , transferred pages: 5007 (n:
> > 4908, d: 99 ) , new dirty pages: 4868 , remaining dirty pages:
> > 7200
> > Iteration 6, duration: 600 ms , transferred pages: 5226 (n:
> > 4908, d: 318 ) , new dirty pages: 6142 , remaining dirty pages:
> > 8116
> > Iteration 7, duration: 700 ms , transferred pages: 5985 (n:
> > 5726, d: 259 ) , new dirty pages: 5902 , remaining dirty pages:
> > 8033
> > Iteration 8, duration: 701 ms , transferred pages: 5893 (n:
> > 5726, d: 167 ) , new dirty pages: 7502 , remaining dirty pages:
> > 9642
> > Iteration 9, duration: 900 ms , transferred pages: 7623 (n:
> > 7362, d: 261 ) , new dirty pages: 6408 , remaining dirty pages:
> > 8427
> > Iteration 10, duration: 700 ms , transferred pages: 6008 (n:
> > 5726, d: 282 ) , new dirty pages: 8312 , remaining dirty pages:
> > 10731
> > Iteration 11, duration: 1000 ms , transferred pages: 8353 (n:
> > 8180, d: 173 ) , new dirty pages: 6874 , remaining dirty pages:
> > 9252
> > Iteration 12, duration: 899 ms , transferred pages: 7477 (n:
> > 7362, d: 115 ) , new dirty pages: 5573 , remaining dirty pages:
> > 7348
> > Iteration 13, duration: 601 ms , transferred pages: 5099 (n:
> > 4908, d: 191 ) , new dirty pages: 7671 , remaining dirty pages:
> > 9920
> > Iteration 14, duration: 900 ms , transferred pages: 7586 (n:
> > 7362, d: 224 ) , new dirty pages: 7359 , remaining dirty pages:
> > 9693
> > Iteration 15, duration: 900 ms , transferred pages: 7682 (n:
> > 7362, d: 320 ) , new dirty pages: 7371 , remaining dirty pages:
> > 9382
> >
> > 4. cpu2006.zeusmp (can not converge)
> >
> > Iteration 1, duration: 21603 ms , transferred pages: 266450 (n:
> > 176660, d: 89790 ) , new dirty pages: 145625 , remaining dirty pages:
> > 145625
> > Iteration 2, duration: 8696 ms , transferred pages: 144389 (n:
> > 70862, d: 73527 ) , new dirty pages: 125124 , remaining dirty pages:
> > 126360
> > Iteration 3, duration: 6301 ms , transferred pages: 124057 (n:
> > 51379, d: 72678 ) , new dirty pages: 122528 , remaining dirty pages:
> > 124831
> > Iteration 4, duration: 6400 ms , transferred pages: 124330 (n:
> > 52196, d: 72134 ) , new dirty pages: 124267 , remaining dirty pages:
> > 124768
> > Iteration 5, duration: 6703 ms , transferred pages: 124034 (n:
> > 54656, d: 69378 ) , new dirty pages: 124151 , remaining dirty pages:
> > 124885
> > Iteration 6, duration: 6703 ms , transferred pages: 124357 (n:
> > 54658, d: 69699 ) , new dirty pages: 124106 , remaining dirty pages:
> > 124634
> > Iteration 7, duration: 6602 ms , transferred pages: 124568 (n:
> > 53838, d: 70730 ) , new dirty pages: 133828 , remaining dirty pages:
> > 133894
> > Iteration 8, duration: 7600 ms , transferred pages: 133030 (n:
> > 62021, d: 71009 ) , new dirty pages: 126612 , remaining dirty pages:
> > 127476
> > Iteration 9, duration: 7299 ms , transferred pages: 126511 (n:
> > 59569, d: 66942 ) , new dirty pages: 122727 , remaining dirty pages:
> > 123692
> > Iteration 10, duration: 6609 ms , transferred pages: 123692 (n:
> > 54539, d: 69153 ) , new dirty pages: 122727 , remaining dirty pages:
> > 122727
> > Iteration 11, duration: 6995 ms , transferred pages: 120347 (n:
> > 56423, d: 63924 ) , new dirty pages: 121430 , remaining dirty pages:
> > 123810
> > Iteration 12, duration: 6703 ms , transferred pages: 123040 (n:
> > 54657, d: 68383 ) , new dirty pages: 122043 , remaining dirty pages:
> > 122813
> > Iteration 13, duration: 7006 ms , transferred pages: 122353 (n:
> > 57121, d: 65232 ) , new dirty pages: 133869 , remaining dirty pages:
> > 134329
> > Iteration 14, duration: 8209 ms , transferred pages: 132325 (n:
> > 66932, d: 65393 ) , new dirty pages: 126914 , remaining dirty pages:
> > 128918
> > Iteration 15, duration: 7802 ms , transferred pages: 126931 (n:
> > 63671, d: 63260 ) , new dirty pages: 122351 , remaining dirty pages:
> > 124338
> >
> > 5. web server : An apache web server. The client is configured with 50
> > concurrent connections.
> >
> > Iteration 1, duration: 30697 ms , transferred pages: 266450 (n:
> > 251215, d: 15235 ) , new dirty pages: 30628 , remaining dirty pages:
> > 30628
> > Iteration 2, duration: 3496 ms , transferred pages: 28859 (n:
> > 28513, d: 346 ) , new dirty pages: 5805 , remaining dirty pages:
> > 7574
> > Iteration 3, duration: 701 ms , transferred pages: 5746 (n:
> > 5726, d: 20 ) , new dirty pages: 3433 , remaining dirty pages:
> > 5261
> > Iteration 4, duration: 400 ms , transferred pages: 3281 (n:
> > 3272, d: 9 ) , new dirty pages: 1539 , remaining dirty pages:
> > 3519
> > Iteration 5, duration: 199 ms , transferred pages: 1653 (n:
> > 1636, d: 17 ) , new dirty pages: 301 , remaining dirty pages:
> > 2167
> > Iteration 6, duration: 1 ms , transferred pages: 0 (n:
> > 0, d: 0 ) , new dirty pages: 0 , remaining dirty pages:
> > 2167
> >
> > --------------------6 vcpu, 6 GB ram, max bandwidth (941.08
> > mbps):------------------
> >
> > 6. memcached : 4 GB cache, memaslap: all write, concurrency = 5 (can not
> > converge)
> >
> > Iteration 1, duration: 42486 ms , transferred pages: 1568087 (n:
> > 1216079, d: 352008 ) , new dirty pages: 571940 , remaining dirty pages:
> > 581023
> > Iteration 2, duration: 19774 ms , transferred pages: 571700 (n:
> > 567416, d: 4284 ) , new dirty pages: 331690 , remaining dirty pages:
> > 341013
> > Iteration 3, duration: 11589 ms , transferred pages: 332187 (n:
> > 332095, d: 92 ) , new dirty pages: 222725 , remaining dirty pages:
> > 231551
> > Iteration 4, duration: 7790 ms , transferred pages: 223571 (n:
> > 223499, d: 72 ) , new dirty pages: 157658 , remaining dirty pages:
> > 165638
> > Iteration 5, duration: 5518 ms , transferred pages: 158056 (n:
> > 157998, d: 58 ) , new dirty pages: 128130 , remaining dirty pages:
> > 135712
> > Iteration 6, duration: 4442 ms , transferred pages: 127764 (n:
> > 127701, d: 63 ) , new dirty pages: 104839 , remaining dirty pages:
> > 112787
> > Iteration 7, duration: 3649 ms , transferred pages: 104581 (n:
> > 104523, d: 58 ) , new dirty pages: 100736 , remaining dirty pages:
> > 108942
> > Iteration 8, duration: 3532 ms , transferred pages: 101379 (n:
> > 101315, d: 64 ) , new dirty pages: 87869 , remaining dirty pages:
> > 95432
> > Iteration 9, duration: 3030 ms , transferred pages: 86841 (n:
> > 86786, d: 55 ) , new dirty pages: 77505 , remaining dirty pages:
> > 86096
> > Iteration 10, duration: 2709 ms , transferred pages: 77875 (n:
> > 77814, d: 61 ) , new dirty pages: 77197 , remaining dirty pages:
> > 85418
> > Iteration 11, duration: 2696 ms , transferred pages: 77107 (n:
> > 77044, d: 63 ) , new dirty pages: 65010 , remaining dirty pages:
> > 73321
> > Iteration 12, duration: 2308 ms , transferred pages: 66540 (n:
> > 66484, d: 56 ) , new dirty pages: 64388 , remaining dirty pages:
> > 71169
> > Iteration 13, duration: 2198 ms , transferred pages: 62953 (n:
> > 62897, d: 56 ) , new dirty pages: 62773 , remaining dirty pages:
> > 70989
> > Iteration 14, duration: 2214 ms , transferred pages: 63466 (n:
> > 63411, d: 55 ) , new dirty pages: 67538 , remaining dirty pages:
> > 75061
> > Iteration 15, duration: 2329 ms , transferred pages: 66924 (n:
> > 66875, d: 49 ) , new dirty pages: 63580 , remaining dirty pages:
> > 71717
> > Iteration 16, duration: 2252 ms , transferred pages: 64554 (n:
> > 64539, d: 15 ) , new dirty pages: 63094 , remaining dirty pages:
> > 70257
> > Iteration 17, duration: 2188 ms , transferred pages: 62697 (n:
> > 62641, d: 56 ) , new dirty pages: 63016 , remaining dirty pages:
> > 70576
> > Iteration 18, duration: 2171 ms , transferred pages: 62377 (n:
> > 62322, d: 55 ) , new dirty pages: 56764 , remaining dirty pages:
> > 64963
> > Iteration 19, duration: 2003 ms , transferred pages: 57382 (n:
> > 57324, d: 58 ) , new dirty pages: 65307 , remaining dirty pages:
> > 72888
> > Iteration 20, duration: 2240 ms , transferred pages: 64426 (n:
> > 64364, d: 62 ) , new dirty pages: 61585 , remaining dirty pages:
> > 70047
> >
> >
> > --
> > Chunguang Li, Ph.D. Candidate
> > Wuhan National Laboratory for Optoelectronics (WNLO)
> > Huazhong University of Science & Technology (HUST)
> > Wuhan, Hubei Prov., China
> >
> >
> >
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK
--
Chunguang Li, Ph.D. Candidate
Wuhan National Laboratory for Optoelectronics (WNLO)
Huazhong University of Science & Technology (HUST)
Wuhan, Hubei Prov., China
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent,
Chunguang Li <=
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Li, Liang Z, 2016/11/03
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Li, Liang Z, 2016/11/03
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Chunguang Li, 2016/11/03
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Li, Liang Z, 2016/11/04
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Chunguang Li, 2016/11/04
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Chunguang Li, 2016/11/07
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Li, Liang Z, 2016/11/07
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Chunguang Li, 2016/11/08
- Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Li, Liang Z, 2016/11/07
Re: [Qemu-devel] Migration dirty bitmap: should only mark pages as dirty after they have been sent, Dr. David Alan Gilbert, 2016/11/08