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Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when do
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From: |
Kevin Wolf |
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Subject: |
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW |
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Date: |
Fri, 26 May 2017 12:17:27 +0200 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 24.05.2017 um 18:09 hat Anton Nefedov geschrieben:
> I agree; as mentioned we have similar patches and they don't conflict much.
> We noticed a performance regression on HDD though, for the
> presumably optimized case (random 4k write over a large backed
> image); so the patches were put on hold.
You're talking about your own patches that should do the same thing,
right? Can you re-do the same test with Berto's patches? Maybe there was
just an implementation glitch in yours.
This approach should very obviously result in a performance improvement,
and the patches are relatively simple, so I'm very much inclined to
merge this as soon as possible.
Kevin
- Re: [Qemu-block] [PATCH 3/7] qcow2: Make perform_cow() call do_perform_cow() twice, (continued)
[Qemu-block] [PATCH 4/7] qcow2: Split do_perform_cow() into _read(), _encrypt() and _write(), Alberto Garcia, 2017/05/23
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Eric Blake, 2017/05/23
- Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Alberto Garcia, 2017/05/24
- Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Anton Nefedov, 2017/05/24
- Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Alberto Garcia, 2017/05/24
- Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Anton Nefedov, 2017/05/24
- Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Alberto Garcia, 2017/05/25
- Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Alberto Garcia, 2017/05/25
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW,
Kevin Wolf <=
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Anton Nefedov, 2017/05/26
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Alberto Garcia, 2017/05/26
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Anton Nefedov, 2017/05/26
Re: [Qemu-block] [PATCH 0/7] qcow2: Reduce the number of I/O ops when doing COW, Alberto Garcia, 2017/05/26