lkml.org 
[lkml]   [2010]   [Oct]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH 1/1] vhost: TX used buffer guest signal accumulation
On Thu, Oct 28, 2010 at 01:13:55PM -0700, Shirley Ma wrote:
> On Thu, 2010-10-28 at 12:32 -0700, Shirley Ma wrote:
> > Also I found a big TX regression for old guest and new guest. For old
> > guest, I am able to get almost 11Gb/s for 2K message size, but for the
> > new guest kernel, I can only get 3.5 Gb/s with the patch and same
> > host.
> > I will dig it why.
>
> The regression is from guest kernel, not from this patch. Tested 2.6.31
> kernel, it's performance is less than 2Gb/s for 2K message size already.
> I will resubmit the patch for review.
>
> I will start to test from 2.6.30 kernel to figure it when TX regression
> induced in virtio_net. Any suggestion which guest kernel I should test
> to figure out this regression?
>
> Thanks
> Shirley

git bisect 2.6.31 2.6.30
and go from here.


\
 
 \ /
  Last update: 2010-10-29 10:15    [W:0.081 / U:0.448 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site