From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [PATCH 0/4] [RFC] virtio-net: Improve small packet performance Date: Thu, 5 May 2011 18:42:45 +0300 Message-ID: <20110505154245.GB2168@redhat.com> References: <20110504140258.14817.66596.sendpatchset@krkumar2.in.ibm.com> <20110504144622.GA15823@redhat.com> <20110504212359.GA21446@redhat.com> <20110505090439.GD17647@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: davem@davemloft.net, eric.dumazet@gmail.com, kvm@vger.kernel.org, netdev@vger.kernel.org, rusty@rustcorp.com.au To: Krishna Kumar2 Return-path: Content-Disposition: inline In-Reply-To: Sender: kvm-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Thu, May 05, 2011 at 08:57:13PM +0530, Krishna Kumar2 wrote: > "Michael S. Tsirkin" wrote on 05/05/2011 02:34:39 PM: > > > > Do I need to apply all the patches and simply test? > > > > > > Thanks, > > > > > > - KK > > > > Exactly. You can also try to tune the threshold > > for interrupts as well. > > I haven't tuned the threshhold, it is left it at 3/4. I ran > the new qemu/vhost/guest, and the results for 1K, 2K and 16K > are below. Note this is a different kernel version from my > earlier test results. So, f.e., BW1 represents 2.6.39-rc2, > the original kernel; while BW2 represents 2.6.37-rc5 (MST's > kernel). This also isn't with the fixes you have sent just > now. I will get a run with that either late tonight or > tomorrow. One thing I'd suggest is merging v2.6.39-rc6 into that tree. rc2 is still pretty early, reason I use it is because that is what net-next is. -- MST