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Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling |
Date: |
Mon, 23 Mar 2015 15:00:05 +0000 |
On Mon, Mar 23, 2015 at 2:49 PM, Paolo Bonzini <address@hidden> wrote:
> On 23/03/2015 15:28, Stefan Hajnoczi wrote:
>> I'd like to know what problems exactly this patch fixes. The test
>> case for throttling actually relies on the virtual clock so it can be
>> stepped deterministically. What other legitimate cases are there
>> where throttling is used outside a running qemu-system process?
>
> Alberto brought up block jobs. It is debatable whether block jobs
> should be stopped while the VM is.
This patch is unrelated to block jobs. Block jobs use their own
ratelimiting mechanism and the realtime clock (not vm clock).
Stefan
- [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling, Fam Zheng, 2015/03/23
- Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling, Paolo Bonzini, 2015/03/23
- Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling, Alberto Garcia, 2015/03/23
- Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling, Stefan Hajnoczi, 2015/03/23
- Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling, Fam Zheng, 2015/03/23
- Re: [Qemu-devel] [PATCH v2] block: Switch to host monotonic clock for IO throttling, Stefan Hajnoczi, 2015/03/24