From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shirley Ma Subject: Re: Network performance with small packets Date: Wed, 02 Feb 2011 10:26:09 -0800 Message-ID: <1296671169.25430.50.camel@localhost.localdomain> References: <20110201215603.GA31348@redhat.com> <1296601197.26937.833.camel@localhost.localdomain> <20110202044002.GB3818@redhat.com> <1296626748.26937.852.camel@localhost.localdomain> <1296627549.26937.856.camel@localhost.localdomain> <20110202062950.GD3818@redhat.com> <1296630891.26937.870.camel@localhost.localdomain> <1296632029.26937.871.camel@localhost.localdomain> <20110202104946.GC8505@redhat.com> <1296661371.25430.13.camel@localhost.localdomain> <20110202182024.GA14257@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Sridhar Samudrala , Steve Dobbelstein , David Miller , kvm@vger.kernel.org, mashirle@linux.vnet.ibm.com, netdev@vger.kernel.org To: "Michael S. Tsirkin" Return-path: In-Reply-To: <20110202182024.GA14257@redhat.com> Sender: kvm-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wed, 2011-02-02 at 20:20 +0200, Michael S. Tsirkin wrote: > How many packets and bytes per interrupt are sent? > Also, what about other values for the counters and other counters? > > What does your patch do? Just drop packets instead of > stopping the interface? > > To have an understanding when should we drop packets > in the guest, we need to know *why* does it help. > Otherwise, how do we know it will work for others? > Note that qdisc will drop packets when it overruns - > so what is different? Also, are we over-running some other queue > somewhere? Agreed. I am trying to put more debugging output to look for all these answers. Shirley