Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030398AbWAHHm3 (ORCPT ); Sun, 8 Jan 2006 02:42:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030457AbWAHHm3 (ORCPT ); Sun, 8 Jan 2006 02:42:29 -0500 Received: from relay01.mail-hub.dodo.com.au ([203.220.32.149]:6019 "EHLO relay01.mail-hub.dodo.com.au") by vger.kernel.org with ESMTP id S1030398AbWAHHm2 (ORCPT ); Sun, 8 Jan 2006 02:42:28 -0500 From: Grant Coady To: be-news06@lina.inka.de (Bernd Eckenfels) Cc: linux-kernel@vger.kernel.org Subject: Re: Why is 2.4.32 four times faster than 2.6.14.6?? Date: Sun, 08 Jan 2006 18:42:25 +1100 Organization: http://bugsplatter.mine.nu/ Reply-To: gcoady@gmail.com Message-ID: References: In-Reply-To: X-Mailer: Forte Agent 2.0/32.652 MIME-Version: 1.0 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: 1609 Lines: 56 On Sun, 08 Jan 2006 08:18:40 +0100, be-news06@lina.inka.de (Bernd Eckenfels) wrote: >Markus Rechberger wrote: >> Hi, >> >> what does hdparm show up? >> Were there any other processes running during the test? >> what does "vmstat 1" show up during the test? > >also also retry with redirection to /dev/null, this could be a console >problem since there is 5 minutes wait time. Excuse me? there is no 5 minutes wait time ;) grant@deltree:~$ uname -r 2.4.32-hf32.1 grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 real 0m1.671s user 0m0.550s sys 0m0.300s grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 >/dev/null real 0m0.510s user 0m0.420s sys 0m0.080s grant@deltree:~$ uname -r 2.6.14.6a grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 >/dev/null real 0m6.463s user 0m0.770s sys 0m0.990s grant@deltree:~$ time grep -v 192\.168\. /var/log/apache/access_log |cut -c-96 >/dev/null real 0m0.524s user 0m0.400s sys 0m0.130s Yes, the delay is in the console, that's what I'm talking about ;) A very perceivable, measurable sluggishness in 2.6 CLI over ssh. Same thing on 2.6.14.6 screen console is (copy by hand): real 0m1.374s user 0m0.510s sys 0m0.960s -- Thanks, Grant. http://bugsplatter.mine.nu/ - 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/