Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964869AbWAHLQo (ORCPT ); Sun, 8 Jan 2006 06:16:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964902AbWAHLQo (ORCPT ); Sun, 8 Jan 2006 06:16:44 -0500 Received: from willy.net1.nerim.net ([62.212.114.60]:41228 "EHLO willy.net1.nerim.net") by vger.kernel.org with ESMTP id S964869AbWAHLQo (ORCPT ); Sun, 8 Jan 2006 06:16:44 -0500 Date: Sun, 8 Jan 2006 12:16:38 +0100 From: Willy Tarreau To: Bernd Eckenfels Cc: linux-kernel@vger.kernel.org, gcoady@gmail.com Subject: Re: Why is 2.4.32 four times faster than 2.6.14.6?? Message-ID: <20060108111638.GA15093@w.ods.org> References: <20060108095741.GH7142@w.ods.org> <20060108105401.GI7142@w.ods.org> <20060108110919.GA6865@lina.inka.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060108110919.GA6865@lina.inka.de> User-Agent: Mutt/1.5.10i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 860 Lines: 26 On Sun, Jan 08, 2006 at 12:09:19PM +0100, Bernd Eckenfels wrote: > On Sun, Jan 08, 2006 at 11:54:01AM +0100, Willy Tarreau wrote: > > > it eats it in high interrupt load. > > *high* ? he never goes far beyond 1000/s ! > > it is 10 times higher on 2.6 than 2.4 (I dont think this can be explained > by the timer, only.) > > > quite possibly, but I'd rather think it's more precisely related > > to the ping-pong in the scheduler between grep, cut and ssh. > > Could be, that would also send smaller buffers to tcp... that's true, and that could explain the higher interrupt rate. > Gruss > Bernd Cheers, Willy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/