On Tue, Nov 23, 2010 at 10:13:43AM +0800, lidong chen wrote:
> I test the performance between per-vhost kthread disable and enable.
>
> Test method:
> Send the same traffic load between per-vhost kthread disable and
> enable, and compare the cpu rate of host os.
> I run five vm on kvm, each of the
On Thu, Dec 09, 2010 at 03:31:08PM +0200, Michael S. Tsirkin wrote:
> On Tue, Nov 23, 2010 at 10:13:43AM +0800, lidong chen wrote:
> > I test the performance between per-vhost kthread disable and enable.
> >
> > Test method:
> > Send the same traffic load between per-vhost kthread disable and
> >
Hi Lidong,
What do you mean by 'send the same traffic load between...' ?
See if my understanding is correct:
You have two identical physical machines (CPU/Memory/NIC...), one(A) runs RHEL6
Beta2(2.6.32-60) and the other one (B) runs RHEL6 (2.6.32-71).
Each machine booted 5 identical VMs and the
I used a special tool, this tool can send and receive packets parallelly.
I set the tool to use the same traffic load.
then i use the tool to test different version of kvm.
2010/11/23 Huang, Zhiteng :
> Hi Lidong,
>
> What do you mean by 'send the same traffic load between...' ?
>
> See if my un
...@kernel.org; s...@us.ibm.com; m...@redhat.com; Avi Kivity;
kvm@vger.kernel.org
Subject: Re: Performance test result between per-vhost kthread disable and
enable
I used a special tool, this tool can send and receive packets parallelly.
I set the tool to use the same traffic load.
then i use the tool to test
ssage-
> From: lidong chen [mailto:chen.lidong.ker...@gmail.com]
> Sent: Tuesday, November 23, 2010 2:53 PM
> To: Huang, Zhiteng
> Cc: t...@kernel.org; s...@us.ibm.com; m...@redhat.com; Avi Kivity;
> kvm@vger.kernel.org
> Subject: Re: Performance test result between per-
On Tue, Nov 23, 2010 at 10:13:43AM +0800, lidong chen wrote:
> I test the performance between per-vhost kthread disable and enable.
>
> Test method:
> Send the same traffic load between per-vhost kthread disable and
> enable, and compare the cpu rate of host os.
> I run five vm on kvm, each of the
At this point, I'd suggest testing vhost-net on the upstream kernel,
not on rhel kernels. The change that introduced per-device threads is:
c23f3445e68e1db0e74099f264bc5ff5d55ebdeb
i will try this tomorrow.
Is CONFIG_SCHED_DEBUG set?
yes. CONFIG_SCHED_DEBUG=y.
2010/11/23 Michael S. Tsirkin :
> On
On Tue, Nov 23, 2010 at 09:23:41PM +0800, lidong chen wrote:
> At this point, I'd suggest testing vhost-net on the upstream kernel,
> not on rhel kernels. The change that introduced per-device threads is:
> c23f3445e68e1db0e74099f264bc5ff5d55ebdeb
> i will try this tomorrow.
>
> Is CONFIG_SCHED_DE
On 11/23/2010 5:41 AM, Michael S. Tsirkin wrote:
On Tue, Nov 23, 2010 at 09:23:41PM +0800, lidong chen wrote:
At this point, I'd suggest testing vhost-net on the upstream kernel,
not on rhel kernels. The change that introduced per-device threads is:
c23f3445e68e1db0e74099f264bc5ff5d55ebdeb
i wil
On Wed, Nov 24, 2010 at 02:49:26PM +0800, lidong chen wrote:
> apply the patch, and disable CONFIG_SCHED_DEBUG, the result is worse,
> the cpu rate of host os is 143%.
Interesting. What does perf top show?
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sorry,because of work plan, i can not give the perf top result now.
i will give the comparative result next week.
2010/11/24 Michael S. Tsirkin :
> On Wed, Nov 24, 2010 at 02:49:26PM +0800, lidong chen wrote:
>> apply the patch, and disable CONFIG_SCHED_DEBUG, the result is worse,
>> the cpu rate
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