From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shirley Ma Subject: Re: Network performance with small packets Date: Tue, 01 Feb 2011 13:28:45 -0800 Message-ID: <1296595725.26937.819.camel@localhost.localdomain> References: <20110127193131.GD5228@redhat.com> <1296157547.1640.45.camel@localhost.localdomain> <20110127200548.GE5228@redhat.com> <20110127.130240.104065182.davem@davemloft.net> <1296163838.1640.53.camel@localhost.localdomain> <20110201172346.GA24392@redhat.com> <1296590943.26937.797.camel@localhost.localdomain> <20110201201715.GA30050@redhat.com> <1296591908.26937.809.camel@localhost.localdomain> <20110201212110.GC30770@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: David Miller , steved@us.ibm.com, netdev@vger.kernel.org, kvm@vger.kernel.org To: "Michael S. Tsirkin" Return-path: In-Reply-To: <20110201212110.GC30770@redhat.com> Sender: kvm-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Tue, 2011-02-01 at 23:21 +0200, Michael S. Tsirkin wrote: > Confused. We compare capacity to skb frags, no? > That's sg I think ... Current guest kernel use indirect buffers, num_free returns how many available descriptors not skb frags. So it's wrong here. Shirley