Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 5 Nov 2002 19:03:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 5 Nov 2002 19:03:34 -0500 Received: from outpost.ds9a.nl ([213.244.168.210]:33437 "EHLO outpost.ds9a.nl") by vger.kernel.org with ESMTP id ; Tue, 5 Nov 2002 19:03:31 -0500 Date: Wed, 6 Nov 2002 01:10:07 +0100 From: bert hubert To: "Martin J. Bligh" Cc: Peter Chubb , jw schultz , LKML Subject: Re: ps performance sucks (was Re: dcache_rcu [performance results]) Message-ID: <20021106001007.GA15200@outpost.ds9a.nl> Mail-Followup-To: bert hubert , "Martin J. Bligh" , Peter Chubb , jw schultz , LKML References: <15816.19206.959160.739312@wombat.chubb.wattle.id.au> <26610000.1036541181@flay> <20021105231649.GA14511@outpost.ds9a.nl> <27920000.1036544267@flay> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <27920000.1036544267@flay> User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1010 Lines: 28 On Tue, Nov 05, 2002 at 04:57:47PM -0800, Martin J. Bligh wrote: > > 'To measure is to know' > > Errm... we have profiled it. Look at the subject line ... this started > off as a dcache_rcu discussion. The dcache lookup ain't cheap, for > starters, but that's not really the problem ... it's O(number of tasks), > which sucks. Ok - but if opening a few files is the problem, the solution is not to roll those files into one but to figure out why opening the files is slow in the first place. Apologies for misinterpreting some of the comments I saw, I'm a bit hyper from my futex documenting spree. Regards, bert -- http://www.PowerDNS.com Versatile DNS Software & Services http://lartc.org Linux Advanced Routing & Traffic Control HOWTO - 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/