From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roopa Prabhu Subject: Re: RFT: virtio_net: limit xmit polling Date: Fri, 24 Jun 2011 05:50:33 -0700 Message-ID: References: <201106211023.24643.tahm@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4127046239959269658==" Return-path: In-Reply-To: <201106211023.24643.tahm@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Mime-version: 1.0 Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Tom Lendacky , "Michael S. Tsirkin" Cc: Krishna Kumar2 , habanero@linux.vnet.ibm.com, lguest@lists.ozlabs.org, Shirley Ma , kvm@vger.kernel.org, Carsten Otte , linux-s390@vger.kernel.org, Heiko Carstens , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, steved@us.ibm.com, Christian Borntraeger , netdev@vger.kernel.org, Martin Schwidefsky , linux390@de.ibm.com List-Id: virtualization@lists.linuxfoundation.org > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --===============4127046239959269658== Content-type: multipart/alternative; boundary="B_3391739433_7656829" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3391739433_7656829 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit Michael, I am testing this too. I have finished one round of testing. But am running it again just to confirm. This time I will see if I can collect some exit stats too. Will post results sometime this weekend. I am just doing TCP_STREAM and TCP_MAERTS from guest to remote host. Thanks, Roopa On 6/21/11 8:23 AM, "Tom Lendacky" wrote: > On Sunday, June 19, 2011 05:27:00 AM Michael S. Tsirkin wrote: >> > OK, different people seem to test different trees. In the hope to get >> > everyone on the same page, I created several variants of this patch so >> > they can be compared. Whoever's interested, please check out the >> > following, and tell me how these compare: > > I'm in the process of testing these patches. Base and v0 are complete > and v1 is near complete with v2 to follow. I'm testing with a variety > of TCP_RR and TCP_STREAM/TCP_MAERTS tests involving local guest-to-guest > tests and remote host-to-guest tests. I'll post the results in the next > day or two when the tests finish. > > Thanks, > Tom > >> > >> > kernel: >> > >> > git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git >> > >> > virtio-net-limit-xmit-polling/base - this is net-next baseline to test >> > against virtio-net-limit-xmit-polling/v0 - fixes checks on out of capacity >> > virtio-net-limit-xmit-polling/v1 - previous revision of the patch >> > this does xmit,free,xmit,2*free,free >> > virtio-net-limit-xmit-polling/v2 - new revision of the patch >> > this does free,xmit,2*free,free >> > >> > There's also this on top: >> > virtio-net-limit-xmit-polling/v3 -> don't delay avail index update >> > I don't think it's important to test this one, yet >> > >> > Userspace to use: event index work is not yet merged upstream >> > so the revision to use is still this: >> > git://git.kernel.org/pub/scm/linux/kernel/git/mst/qemu-kvm.git >> > virtio-net-event-idx-v3 > --B_3391739433_7656829 Content-type: text/html; charset="US-ASCII" Content-transfer-encoding: quoted-printable Re: RFT: virtio_net: limit xmit polling Michael,  

I am testing this too.
 I have finished one round of testing. But am running it again just to= confirm.
This time I will see if I can collect some exit stats too. Will post result= s sometime this weekend.
I am just doing TCP_STREAM and TCP_MAERTS from guest to remote host.

Thanks,
Roopa


On 6/21/11 8:23 AM, "Tom Lendacky" <tahm@linux.vnet.ibm.com> wrote:

<= SPAN STYLE=3D'font-size:11pt'>On Sunday, June 19, 2011 05:27:00 AM Michael S. = Tsirkin wrote:
> OK, different people seem to test different trees.  In the hope t= o get
> everyone on the same page, I created several variants of this patch so=
> they can be compared. Whoever's interested, please check out the
> following, and tell me how these compare:

I'm in the process of testing these patches.  Base and v0 are complete=
and v1 is near complete with v2 to follow.  I'm testing with a variety=
of TCP_RR and TCP_STREAM/TCP_MAERTS tests involving local guest-to-guest tests and remote host-to-guest tests.  I'll post the results in the ne= xt
day or two when the tests finish.

Thanks,
Tom

>
> kernel:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git
>
> virtio-net-limit-xmit-polling/base - this is net-next baseline to test=
> against virtio-net-limit-xmit-polling/v0 - fixes checks on out of capa= city
> virtio-net-limit-xmit-polling/v1 - previous revision of the patch
>            &nbs= p;  this does xmit,free,xmit,2*free,free
> virtio-net-limit-xmit-polling/v2 - new revision of the patch
>            &nbs= p;  this does free,xmit,2*free,free
>
> There's also this on top:
> virtio-net-limit-xmit-polling/v3 -> don't delay avail index update<= BR> > I don't think it's important to test this one, yet
>
> Userspace to use: event index work is not yet merged upstream
> so the revision to use is still this:
> git://git.kernel.org/pub/scm/linux/kernel/git/mst/qemu-kvm.git
> virtio-net-event-idx-v3

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