Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 18 Dec 2002 19:45:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 18 Dec 2002 19:45:46 -0500 Received: from mail.internetwork-ag.de ([217.6.75.131]:15265 "EHLO mail.internetwork-ag.de") by vger.kernel.org with ESMTP id ; Wed, 18 Dec 2002 19:45:46 -0500 Message-ID: <3E011899.A3FBDAF1@inw.de> Date: Wed, 18 Dec 2002 16:53:45 -0800 From: Till Immanuel Patzschke Organization: interNetwork AG X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: lse-tech , "linux-kernel@vger.kernel.org" Subject: Re: 15000+ processes -- poor performance ?! References: <3E0116D6.35CA202A@inw.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1591 Lines: 37 forgot the kernel version (2.4.20aa1)... Till Immanuel Patzschke wrote: > Dear List(s), > > as part of my project I need to run a very high number of processes/threads on a > linux machine. Right now I have a Dual-PIII 1.4G w/ 8GB RAM -- I am running > 4000 processes w/ 2-3 threads each totaling in a process count of 15000+ > processes (since Linux doesn't really distinguish between threads and > processes...). > Once I pass the 10000 (+/-) pocesses load increases drastically (on startup, > although it returns to normal), however the system time (on one processor) > reaches for 54% (12061 procs) while the only non sleeping process is top -- the > system is basically doing nothing (except scheduling the "nothing" which > consumes significant system time). > Is there anything I can do to reduce that system load/time? (I haven't been > able to exactly define the "line" but it definitly gets worse the more processes > need to be handled.) > Does any of the patchsets address this particular problem? > BTW: The processes are all alike... > > Thanks for you help! > > Immanuel > > - > 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/ - 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/