Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 31 Jul 2002 08:30:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 31 Jul 2002 08:30:30 -0400 Received: from garrincha.netbank.com.br ([200.203.199.88]:57092 "HELO garrincha.netbank.com.br") by vger.kernel.org with SMTP id ; Wed, 31 Jul 2002 08:30:30 -0400 Date: Wed, 31 Jul 2002 09:33:34 -0300 (BRT) From: Rik van Riel X-X-Sender: riel@imladris.surriel.com To: Diego Calleja cc: linux-kernel@vger.kernel.org Subject: Re: profile of 2.4.19-rc3-ac4 In-Reply-To: <20020731020530.35cb7fc5.diegocg@teleline.es> Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1058 Lines: 29 On Wed, 31 Jul 2002, Diego Calleja wrote: > This is the profile of a 2.4.19-rc3-ac4 after a heavy disk /swap usage. > I send it because it seems that page_referenced takes a lot of time.... That might well be because it's being called a LOT, since in a disk/swap intensive workload we want to make very sure we evict the right page from RAM. A disk seek is worth about ten million CPU cycles... > 607951 default_idle 15198,7750 > 1019 page_referenced 16,9833 > 831 serial_in 15,9808 > 406 __rdtsc_delay 14,5000 > 836 unlock_page 6,3333 Rik -- Bravely reimplemented by the knights who say "NIH". http://www.surriel.com/ http://distro.conectiva.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/