gt; Nider/Haifa/IBM@IBMIL, abel.gor...@gmail.com, linux-
> ker...@vger.kernel.org, net...@vger.kernel.org,
> virtualizat...@lists.linux-foundation.org
> Date: 10/08/2014 10:45 PM
> Subject: Re: [PATCH] vhost: Add polling mode
>
> On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladels
ot;k...@vger.kernel.org" , "linux-
> ker...@vger.kernel.org" ,
> "net...@vger.kernel.org" ,
> "virtualizat...@lists.linux-foundation.org"
> , Yossi
Kuperman1/Haifa/IBM@IBMIL
> Date: 21/08/2014 05:31 PM
> Subject: RE: [PATCH] vhost: Add pol
>>> >
>>> > Results:
>>> >
>>> > Netperf, 1 vm:
>>> > The polling patch improved throughput by ~33% (1516 MB/sec -> 2046
>>> > MB/sec).
>>> > Number of exits/sec decreased 6x.
>>> > The same improvement was shown when I tested with 3 vms running netperf
>>> > (4086 MB/sec -> 5545 MB/sec).
>>> >
>> >
>> > Results:
>> >
>> > Netperf, 1 vm:
>> > The polling patch improved throughput by ~33% (1516 MB/sec -> 2046 MB/sec).
>> > Number of exits/sec decreased 6x.
>> > The same improvement was shown when I tested with 3 vms running netperf
>> > (4086 MB/sec -> 5545 MB/sec).
>> >
>> > filebench,
From: Razya Ladelsky
> "Michael S. Tsirkin" wrote on 20/08/2014 01:57:10 PM:
>
> > > Results:
> > >
> > > Netperf, 1 vm:
> > > The polling patch improved throughput by ~33% (1516 MB/sec -> 2046
> > > MB/sec).
> > > Number of exits/sec decreased 6x.
> > > The same improvement was shown when I tes
"Michael S. Tsirkin" wrote on 20/08/2014 01:57:10 PM:
> > Results:
> >
> > Netperf, 1 vm:
> > The polling patch improved throughput by ~33% (1516 MB/sec -> 2046
MB/sec).
> > Number of exits/sec decreased 6x.
> > The same improvement was shown when I tested with 3 vms running
netperf
> > (4086
Christian Borntraeger wrote on 20/08/2014
11:41:32 AM:
> >
> > Results:
> >
> > Netperf, 1 vm:
> > The polling patch improved throughput by ~33% (1516 MB/sec -> 2046
MB/sec).
> > Number of exits/sec decreased 6x.
> > The same improvement was shown when I tested with 3 vms running
netperf
>
On Tue, Aug 19, 2014 at 11:36:31AM +0300, Razya Ladelsky wrote:
> > That was just one example. There many other possibilities. Either
> > actually make the systems load all host CPUs equally, or divide
> > throughput by host CPU.
> >
>
> The polling patch adds this capability to vhost, reducing
On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote:
> From: Razya Ladelsky
> Date: Thu, 31 Jul 2014 09:47:20 +0300
> Subject: [PATCH] vhost: Add polling mode
>
> When vhost is waiting for buffers from the guest driver (e.g., more packets to
> send in vhost-net
On Wed, Aug 20, 2014 at 10:41:32AM +0200, Christian Borntraeger wrote:
> On 10/08/14 10:30, Razya Ladelsky wrote:
> > From: Razya Ladelsky
> > Date: Thu, 31 Jul 2014 09:47:20 +0300
> > Subject: [PATCH] vhost: Add polling mode
> >
> > When vhost is waiting for b
On 10/08/14 10:30, Razya Ladelsky wrote:
> From: Razya Ladelsky
> Date: Thu, 31 Jul 2014 09:47:20 +0300
> Subject: [PATCH] vhost: Add polling mode
>
> When vhost is waiting for buffers from the guest driver (e.g., more packets to
> send in vhost-net's transmit queue), it
> That was just one example. There many other possibilities. Either
> actually make the systems load all host CPUs equally, or divide
> throughput by host CPU.
>
The polling patch adds this capability to vhost, reducing costly exit
overhead when the vm is loaded.
In order to load the vm I ran
On Sun, Aug 17, 2014 at 03:35:39PM +0300, Razya Ladelsky wrote:
> > >
> > > Hi Michael,
> > >
> > > Sorry for the delay, had some problems with my mailbox, and I realized
>
> > > just now that
> > > my reply wasn't sent.
> > > The vm indeed ALWAYS utilized 100% cpu, whether polling was enabled
> >
> > Hi Michael,
> >
> > Sorry for the delay, had some problems with my mailbox, and I realized
> > just now that
> > my reply wasn't sent.
> > The vm indeed ALWAYS utilized 100% cpu, whether polling was enabled or
> > not.
> > The vhost thread utilized less than 100% (of the other cpu) w
gt; Glikson/Haifa/IBM@IBMIL, Eran Raichstein/Haifa/IBM@IBMIL, Yossi
> > Kuperman1/Haifa/IBM@IBMIL, Joel Nider/Haifa/IBM@IBMIL,
> > abel.gor...@gmail.com, linux-kernel@vger.kernel.org,
> > net...@vger.kernel.org, virtualizat...@lists.linux-foundation.org
> > Date: 12/08/2014
M@IBMIL, Joel Nider/Haifa/IBM@IBMIL,
> abel.gor...@gmail.com, linux-kernel@vger.kernel.org,
> net...@vger.kernel.org, virtualizat...@lists.linux-foundation.org
> Date: 12/08/2014 12:18 PM
> Subject: Re: [PATCH] vhost: Add polling mode
>
> On Mon, Aug 11, 2014 at 12:46:21PM -07
On Mon, Aug 11, 2014 at 12:46:21PM -0700, David Miller wrote:
> From: "Michael S. Tsirkin"
> Date: Sun, 10 Aug 2014 21:45:59 +0200
>
> > On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote:
> ...
> > And, did your tests actually produce 100% load on both host CPUs?
> ...
>
> Michael
From: "Michael S. Tsirkin"
Date: Sun, 10 Aug 2014 21:45:59 +0200
> On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote:
...
> And, did your tests actually produce 100% load on both host CPUs?
...
Michael, please do not quote an entire patch just to ask a one line
question.
I truly,
On Sun, Aug 10, 2014 at 11:30:35AM +0300, Razya Ladelsky wrote:
> From: Razya Ladelsky
> Date: Thu, 31 Jul 2014 09:47:20 +0300
> Subject: [PATCH] vhost: Add polling mode
>
> When vhost is waiting for buffers from the guest driver (e.g., more packets to
> send in vhost-net
From: Razya Ladelsky
Date: Thu, 31 Jul 2014 09:47:20 +0300
Subject: [PATCH] vhost: Add polling mode
When vhost is waiting for buffers from the guest driver (e.g., more packets to
send in vhost-net's transmit queue), it normally goes to sleep and waits for the
guest to "kick"
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