Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 12 Nov 2001 18:28:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 12 Nov 2001 18:28:29 -0500 Received: from user-119a3cr.biz.mindspring.com ([66.149.13.155]:21765 "HELO fancypants.trellisinc.com") by vger.kernel.org with SMTP id ; Mon, 12 Nov 2001 18:28:14 -0500 Date: Mon, 12 Nov 2001 18:28:11 -0500 From: Jason Lunz To: Frank de Lange Cc: linux-kernel@vger.kernel.org Subject: Re: Abysmal interactive performance on 2.4.linus Message-ID: <20011112182811.A5412@trellisinc.com> In-Reply-To: <20011112205551.A14132@unternet.org> <3BF02BA4.D7E2D70E@mandrakesoft.com> <3BF02BA4.D7E2D70E@mandrakesoft.com> <20011112235642.A17544@unternet.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20011112235642.A17544@unternet.org> User-Agent: Mutt/1.3.23i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org In mlist.linux-kernel, you wrote: > Seems that reiserfs is the common factor here, at least on my box. This is a 35 > GB reiserfs filesystem, app 80% used, both large and small files. > > As said in my previous message, the numbers themselves don't mean squat. It is > the large delays (the fact that user+sys <<< real) which are the problem here. As another data point, I'm seeing the exact same thing. I haven't tried any non-Linus kernels, though. But recent 2.4.x (x >= 10?) linus kernels with reiserfs have these several-second delays during moderate-to-heavy disk i/o, exactly as you've described. I've seen this on both an SMP PIII system and a UP Athlon. -- Jason Lunz Trellis Network Security j@trellisinc.com http://www.trellisinc.com/ - 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/