From owner-freebsd-current@FreeBSD.ORG Sat May 10 06:03:41 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B320D37B401 for ; Sat, 10 May 2003 06:03:41 -0700 (PDT) Received: from angelica.unixdaemons.com (angelica.unixdaemons.com [209.148.64.135]) by mx1.FreeBSD.org (Postfix) with ESMTP id D112E43FAF for ; Sat, 10 May 2003 06:03:40 -0700 (PDT) (envelope-from bmilekic@unixdaemons.com) Received: from angelica.unixdaemons.com (bmilekic@localhost.unixdaemons.com [127.0.0.1])h4AD2Fww056615; Sat, 10 May 2003 09:02:15 -0400 (EDT) Received: (from bmilekic@localhost) by angelica.unixdaemons.com (8.12.9/8.12.1/Submit) id h4AD2Fd2056614; Sat, 10 May 2003 09:02:15 -0400 (EDT) (envelope-from bmilekic@unixdaemons.com) X-Authentication-Warning: angelica.unixdaemons.com: bmilekic set sender to bmilekic@unixdaemons.com using -f Date: Sat, 10 May 2003 09:02:15 -0400 From: Bosko Milekic To: Paul Richards Message-ID: <20030510130214.GB50135@unixdaemons.com> References: <1052570246.27195.6.camel@cf.freebsd-services.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1052570246.27195.6.camel@cf.freebsd-services.com> User-Agent: Mutt/1.4.1i cc: current@freebsd.org Subject: Re: Interrupt latency problems X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 May 2003 13:03:42 -0000 On Sat, May 10, 2003 at 01:37:27PM +0100, Paul Richards wrote: > I'm having real problems with current with heavy disk activity. > > When working in X and updating ports which causes a lot of disk activity > I get *very* poor interactive responses. Keypresses can not appear for > seconds and mouse movement is very jerky and unresponsive. > > I'm wondering if something is holding locks a long time in interrupt > handlers and causing mouse/keyboard interrupts to be lost? > > Since this is caused by heavy disk activity then my first guess would be > the ATA driver. > > Is anyone else seeing anything like this? > > -- > Paul Richards > FreeBSD Services Ltd What scheduler are you running with? Try switching ULE <-> 4BSD and see if it changes anything. -- Bosko Milekic bmilekic@unixdaemons.com bmilekic@FreeBSD.org