Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 4 Apr 2001 21:32:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 4 Apr 2001 21:32:26 -0400 Received: from VM.NMU.EDU ([198.110.200.34]:38615 "HELO VM.NMU.EDU") by vger.kernel.org with SMTP id ; Wed, 4 Apr 2001 21:31:56 -0400 Message-Id: <5.0.0.25.2.20010404211904.009d3eb0@pop.mail.nmu.edu> X-Mailer: QUALCOMM Windows Eudora Version 5.0 Date: Wed, 04 Apr 2001 21:30:51 -0400 To: linux-kernel@vger.kernel.org From: "Carey B. Stortz" Subject: Signal Handling Performance? Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I am doing a research project on Linux kernel performance starting with the 2.0.1 kernel through the 2.4.0 kernel. I ran across something very interesting when running LMBench and reviewing the results. The performance of Signal Handling has decreased while every other area has 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? Thanks for your time Carey Stortz - 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/