From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: [PATCH] sky2: skb recycling Date: Wed, 22 Oct 2008 16:58:17 -0700 Message-ID: <48FFBE19.7010803@hp.com> References: <20081020190922.7dd6510a@extreme> <20081020.221857.209830018.davem@davemloft.net> <48FE34AF.8050508@hp.com> <48FE386F.8090706@cosmosbay.com> <20081021133811.68bd5ce1@extreme> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Eric Dumazet , David Miller , jgarzik@pobox.com, netdev@vger.kernel.org To: Stephen Hemminger Return-path: Received: from g4t0014.houston.hp.com ([15.201.24.17]:3685 "EHLO g4t0014.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752324AbYJVX6V (ORCPT ); Wed, 22 Oct 2008 19:58:21 -0400 In-Reply-To: <20081021133811.68bd5ce1@extreme> Sender: netdev-owner@vger.kernel.org List-ID: Stephen Hemminger wrote: > On Tue, 21 Oct 2008 22:15:43 +0200 > Eric Dumazet wrote: >=20 >=20 >>Rick Jones a =E9crit : >>> I've not had a good emily litella moment all day so I'll ask - is >>> there really that much in the way of suitable skb's which are >>> completely free after transmit completion? >> >> Or, if we take another way, say a VOIP RTP machine sends and >> receive 20.000 packets per second, each being 200 bytes long, are >> transmited packets correctly sized at sendto() time to be >> candidates for recycling ? >=20 > No. Most locally generate packets aren't going to be right size > because they will be too small, cloned or fragmented. It really only > helps when forwarding. So we have a bit of "tension" between the desires of an end host vs=20 those of a router right? rick jones