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[Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a V
From: |
Chris Wright |
Subject: |
[Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2) |
Date: |
Wed, 1 Dec 2010 09:46:56 -0800 |
User-agent: |
Mutt/1.5.20 (2009-08-17) |
* Peter Zijlstra (address@hidden) wrote:
> On Wed, 2010-12-01 at 09:17 -0800, Chris Wright wrote:
> > Directed yield and fairness don't mix well either. You can end up
> > feeding the other tasks more time than you'll ever get back.
>
> If the directed yield is always to another task in your cgroup then
> inter-guest scheduling fairness should be maintained.
>
> Yes, but not the inter-vcpu fairness.
That same vcpu doesn't get fair scheduling if it spends its entire
timeslice spinning on a lock held by a de-scheduled vcpu.
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Avi Kivity, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Peter Zijlstra, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Chris Wright, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Peter Zijlstra, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2),
Chris Wright <=
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Rik van Riel, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Peter Zijlstra, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Rik van Riel, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Peter Zijlstra, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Rik van Riel, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Peter Zijlstra, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Avi Kivity, 2010/12/02
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Peter Zijlstra, 2010/12/01
- [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2), Srivatsa Vaddagiri, 2010/12/01