Received: with ECARTIS (v1.0.0; list netdev); Tue, 07 Dec 2004 05:15:16 -0800 (PST) Received: from quickstop.soohrt.org (quickstop.soohrt.org [81.2.155.147]) by oss.sgi.com (8.13.0/8.13.0) with ESMTP id iB7DFAP7012281 for ; Tue, 7 Dec 2004 05:15:11 -0800 Received: (qmail 2228 invoked by uid 1000); 7 Dec 2004 13:14:45 -0000 Date: Tue, 7 Dec 2004 14:14:45 +0100 From: Karsten Desler To: jamal Cc: Robert Olsson , Bernd Eckenfels , "David S. Miller" , netdev@oss.sgi.com, linux-kernel@vger.kernel.org Subject: Re: _High_ CPU usage while routing (mostly) small UDP packets Message-ID: <20041207131445.GA1622@soohrt.org> References: <20041207002012.GB30674@quickstop.soohrt.org> <1102387595.1088.48.camel@jzny.localdomain> <20041207025456.GA525@soohrt.org> <1102389533.1089.51.camel@jzny.localdomain> <20041207032438.GA7767@soohrt.org> <1102390241.1093.59.camel@jzny.localdomain> <20041207040235.GA10501@soohrt.org> <20041207102132.GA28588@quickstop.soohrt.org> <1102422845.1089.105.camel@jzny.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <1102422845.1089.105.camel@jzny.localdomain> User-Agent: Mutt/1.5.6+20040722i X-archive-position: 12522 X-ecartis-version: Ecartis v1.0.0 Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com X-original-sender: kdesler@soohrt.org Precedence: bulk X-list: netdev * jamal wrote: > > # sar -I 169 5 5 > > 11:20:05 INTR intr/s > > 11:20:10 169 10401.40 > > That doesnt seem to be too high. To recap: 169 is a fibre e1000, eth1 is one of two ports on a dualport e1000 copper nic. eth1 is still running at about 4k int/s. 14:12:18 INTR intr/s 14:12:23 169 34012.80 14:12:28 169 33977.60 14:12:33 169 34218.16 14:12:38 169 34060.60 14:12:43 169 34252.60 Average: 169 34104.40 Cheers, Karsten