Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 4 Apr 2001 21:44:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 4 Apr 2001 21:44:25 -0400 Received: from cy57850-a.rdondo1.ca.home.com ([24.5.132.106]:26637 "HELO firewall.philstone.com") by vger.kernel.org with SMTP id ; Wed, 4 Apr 2001 21:44:15 -0400 Date: Wed, 04 Apr 2001 18:41:10 -0700 From: Christopher Smith To: "Carey B. Stortz" , linux-kernel@vger.kernel.org Subject: Re: Signal Handling Performance? Message-ID: <50490000.986434870@hellman> In-Reply-To: <5.0.0.25.2.20010404211904.009d3eb0@pop.mail.nmu.edu> X-Mailer: Mulberry/2.0.8 (Linux/x86 Demo) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --On Wednesday, April 04, 2001 21:30:51 -0400 "Carey B. Stortz" wrote: > either stayed the same or had a performance increase. A general decrease > started around kernel 2.1.32, then performance drastically fell at kernel > 2.3.20. There is an Excel graph which shows the trend at: > > http://euclid.nmu.edu/~benchmark/Carey/signalhandling.gif > > I was wondering if anybody had any ideas why this is happening, and what > happened in kernel 2.3.20 to cause such a decrease in performance? Lies, damn lies, and benchmarks. ;-) Seriously though, I'm not clear on what you are measuring or how you are measuring it. It looks like this is measuring signal latency, which is important, but what about thoroughput? --Chris - 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/