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[Qemu-devel] RE: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucur
From: |
Dor Laor |
Subject: |
[Qemu-devel] RE: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure -take2 |
Date: |
Sun, 19 Aug 2007 00:36:01 -0700 |
>I think this is a really nice and important patch set. Just a couple
>things:
>
>On Sun, 2007-08-19 at 00:02 +0200, Luca Tettamanti wrote:
>
>> > In this case the dyn-tick minimum res will be 1msec. I believe it
>should
>> > work ok since this is the case without any dyn-tick.
>>
>> Actually minimum resolution depends on host HZ setting, but - yes -
>> essentially you have the same behaviour of the "unix" timer, plus the
>> overhead of reprogramming the timer.
>
>Is this significant? At a high guest HZ, this is could be quite a lot
>of additional syscalls right?
>
I believe it's no significant since without dyn-tick the guest will get
the
same amount of signals so the overhead is doubling the syscalls (not a
magnitude bigger).
On the other size guests with low HZ and linux guests with dyn-tick will
enojy
from lesser syscalls.
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., (continued)
[Qemu-devel] [PATCH 4/4] Add support for dynamic ticks., Luca Tettamanti, 2007/08/17
[Qemu-devel] [PATCH 2/4] Add -clock option., Luca Tettamanti, 2007/08/17
Re: [Qemu-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take 2, Christian MICHON, 2007/08/17
[Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take 2, Anthony Liguori, 2007/08/18
- [Qemu-devel] RE: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Dor Laor, 2007/08/18
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca Tettamanti, 2007/08/18
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Anthony Liguori, 2007/08/18
- [Qemu-devel] RE: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure -take2,
Dor Laor <=
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19
- Re: [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Jamie Lokier, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Paul Brook, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19
- RE: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Dor Laor, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/20
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Jamie Lokier, 2007/08/19
- RE: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarmtimer infrastrucure - take2, Dor Laor, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19