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[Qemu-devel] [RFC] kvm: export host NUMA info to guest's scheduler
From: |
Liu Ping Fan |
Subject: |
[Qemu-devel] [RFC] kvm: export host NUMA info to guest's scheduler |
Date: |
Wed, 23 May 2012 14:32:27 +0800 |
Currently, the guest can not know the NUMA info of the vcpu, which will
result in performance drawback. For example:
Supposing vcpu-a on nodeA, vcpu-b on nodeB, when load balance,
the tasks' pull and push between these vcpus will cost more. But
unfortunately, currently, the guest is just blind to this.
So here is the idea to solve it.
Export host numa info through guest's sched domain to its scheduler.
So the guest's lb will consider the cost.
These patches include:
For guest:
0001-sched-add-virt-sched-domain-for-the-guest.patch
0002-sched-add-virt-domain-device-s-driver.patch
For host:
0001-kvm-collect-vcpus-numa-info-for-guest-s-scheduler.patch
0001-Qemu-add-virt-sched-domain-device.patch
Please give some comments and suggestion.
Thanks and regards,
pingfan
- [Qemu-devel] [RFC] kvm: export host NUMA info to guest's scheduler,
Liu Ping Fan <=
- [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Liu Ping Fan, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Peter Zijlstra, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Liu ping fan, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Peter Zijlstra, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Liu ping fan, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Peter Zijlstra, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Liu ping fan, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Peter Zijlstra, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Dave Hansen, 2012/05/23
- Re: [Qemu-devel] [PATCH 1/2] sched: add virt sched domain for the guest, Peter Zijlstra, 2012/05/23