> >
> > Our suggestion would be to use the maximum (a large enough) value,
> > so that vhost is polling 100% of the time.
> >
> > The polling optimization mainly addresses users who want to maximize
their
> > performance, even on the expense of wasting cpu cycles. The maximum
value
> > will pr
fa/IBM@IBMIL,
> > Yossi Kuperman1/Haifa/IBM@IBMIL, Joel Nider/Haifa/IBM@IBMIL,
> > abel.gor...@gmail.com, kvm@vger.kernel.org, Eyal
> Moscovici/Haifa/IBM@IBMIL
> > Date: 12/01/2015 12:36 PM
> > Subject: Re: Fw: Benchmarking for vhost polling patch
> >
> &g
L,
> abel.gor...@gmail.com, kvm@vger.kernel.org, Eyal
Moscovici/Haifa/IBM@IBMIL
> Date: 12/01/2015 12:36 PM
> Subject: Re: Fw: Benchmarking for vhost polling patch
>
> On Sun, Jan 11, 2015 at 02:44:17PM +0200, Razya Ladelsky wrote:
> > > Hi Razya,
> > > Thanks for the updat
On Sun, Jan 11, 2015 at 02:44:17PM +0200, Razya Ladelsky wrote:
> > Hi Razya,
> > Thanks for the update.
> > So that's reasonable I think, and I think it makes sense
> > to keep working on this in isolation - it's more
> > manageable at this size.
> >
> > The big questions in my mind:
> > - What h
> Hi Razya,
> Thanks for the update.
> So that's reasonable I think, and I think it makes sense
> to keep working on this in isolation - it's more
> manageable at this size.
>
> The big questions in my mind:
> - What happens if system is lightly loaded?
> E.g. a ping/pong benchmark. How much ext
> From: Razya Ladelsky/Haifa/IBM@IBMIL
> To: m...@redhat.com
> Cc:
> Date: 25/11/2014 02:43 PM
> Subject:Re: Benchmarking for vhost polling patch
> Sent by:kvm-ow...@vger.kernel.org
>
>
>
> Hi Michael,
>
> > Hi Razya,
> > On t
Razya
- Forwarded by Razya Ladelsky/Haifa/IBM on 01/01/2015 09:37 AM -
From: Razya Ladelsky/Haifa/IBM@IBMIL
To: m...@redhat.com
Cc:
Date: 25/11/2014 02:43 PM
Subject: Re: Benchmarking for vhost polling patch
Sent by:kvm-ow...@vger.kernel.org
Hi Michael,
> Hi Raz
Hi Michael,
> Hi Razya,
> On the netperf benchmark, it looks like polling=10 gives a modest but
> measureable gain. So from that perspective it might be worth it if it's
> not too much code, though we'll need to spend more time checking the
> macro effect - we barely moved the needle on the macro
> Eran Raichstein/Haifa/IBM@IBMIL, Yossi Kuperman1/Haifa/IBM@IBMIL,
> > Joel Nider/Haifa/IBM@IBMIL, abel.gor...@gmail.com, kvm@vger.kernel.org
> > Date: 29/10/2014 02:38 PM
> > Subject: Benchmarking for vhost polling patch
> >
> > Hi Michael,
> >
>
Haifa/IBM@IBMIL, abel.gor...@gmail.com, kvm@vger.kernel.org
> Date: 29/10/2014 02:38 PM
> Subject: Benchmarking for vhost polling patch
>
> Hi Michael,
>
> Following the polling patch thread: http://marc.info/?
> l=kvm&m=140853271510179&w=2,
> I changed poll_stop_idle
Haifa/IBM@IBMIL, abel.gor...@gmail.com, kvm@vger.kernel.org
> Date: 29/10/2014 02:38 PM
> Subject: Benchmarking for vhost polling patch
>
> Hi Michael,
>
> Following the polling patch thread: http://marc.info/?
> l=kvm&m=140853271510179&w=2,
> I changed poll_stop_idle
>> > Hi Michael,
>> >
>> > Following the polling patch thread: http://marc.info/?
>> l=kvm&m=140853271510179&w=2,
>> > I changed poll_stop_idle to be counted in micro seconds, and carried
>out
>> > experiments using varying sizes of this value. The setup for
>> netperf consisted of
>> > 1 vm
"Zhang Haoyu" wrote on 30/10/2014 01:30:08 PM:
> From: "Zhang Haoyu"
> To: Razya Ladelsky/Haifa/IBM@IBMIL, "mst"
> Cc: Razya Ladelsky/Haifa/IBM@IBMIL, "kvm"
> Date: 30/10/2014 01:30 PM
> Subject: Re: Benchmarking for vhost polling patch
> Hi Michael,
>
> Following the polling patch thread:
> http://marc.info/?l=kvm&m=140853271510179&w=2,
> I changed poll_stop_idle to be counted in micro seconds, and carried out
> experiments using varying sizes of this value. The setup for netperf
> consisted of
> 1 vm and 1 vhost , each run
Hi Michael,
Following the polling patch thread:
http://marc.info/?l=kvm&m=140853271510179&w=2,
I changed poll_stop_idle to be counted in micro seconds, and carried out
experiments using varying sizes of this value. The setup for netperf consisted
of
1 vm and 1 vhost , each running on their ow
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