Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261251AbVEILZS (ORCPT ); Mon, 9 May 2005 07:25:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261252AbVEILZR (ORCPT ); Mon, 9 May 2005 07:25:17 -0400 Received: from nysv.org ([213.157.66.145]:14227 "EHLO nysv.org") by vger.kernel.org with ESMTP id S261251AbVEILY5 (ORCPT ); Mon, 9 May 2005 07:24:57 -0400 Date: Mon, 9 May 2005 14:24:46 +0300 To: linux-kernel@vger.kernel.org Cc: ck@vds.kolivas.org, Ingo Molnar , AndrewMorton , Carlos Carvalho Subject: Re: [PATCH] implement nice support across physical cpus on SMP Message-ID: <20050509112446.GZ1399@nysv.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="mdGUb96ZZNqpHCXz" Content-Disposition: inline In-Reply-To: <200505072342.32997.kernel@kolivas.org> User-Agent: Mutt/1.5.6+20040907i From: mjt@nysv.org (Markus =?ISO-8859-1?Q?=20T=F6rnqvist?=) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5890 Lines: 172 --mdGUb96ZZNqpHCXz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I beg to differ with Mr. Carvalho's assesment with this patch; it works like a charm, and then some. The rest of the message is just my analysis of the situation ran on a Dell PowerEdge 2850, dual hyperthread Xeon EM64Ts, with Debian Pure64 Sarge installed. Mr. Carvalho, is the program you tested a failure with open, or is it possible for me to have the code and try to reproduce this nevertheless? My two cents say this is going in :) And on replying, anyone, please keep me in the Cc, as I'm not subscribed. The rest of this message is just the "raw" data on my experiment. $ cat load.sh #!/bin/sh if [ $1 ] && [ -n $1 ]; then count=3D$1 else count=3D1 fi cur=3D0 while [ $cur -lt $count ]; do cur=3D$[ $cur + 1 ] if [ $cur -eq $[ $count-1 ] ] || [ $cur -eq $count ]; then nice -n 19 load_base.sh & else load_base.sh & fi done $ cat load_base.sh=20 #!/bin/sh while true; do a=3D1; done $ ./load.sh 5 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND = =20 3918 mjt 34 0 5660 1136 936 R 99.9 0.0 1:34.30 load_base.sh = =20 3917 mjt 35 0 5660 1136 936 R 99.5 0.0 1:34.30 load_base.sh = =20 3916 mjt 34 0 5660 1136 936 R 59.7 0.0 0:53.16 load_base.sh = =20 3919 mjt 39 19 5660 1136 936 R 6.0 0.0 0:05.97 load_base.sh = =20 3920 mjt 39 19 5660 1136 936 R 3.0 0.0 0:02.62 load_base.sh PID USER PR NI VIRT SHR S %CPU %MEM TIME+ #C COMMAND = =20 3917 mjt 26 0 5660 936 R 99.9 0.0 3:37.61 0 load_base.sh = =20 3918 mjt 25 0 5660 936 R 99.9 0.0 3:37.60 3 load_base.sh = =20 3916 mjt 26 0 5660 936 R 52.7 0.0 2:02.37 2 load_base.sh = =20 3919 mjt 39 19 5660 936 R 7.0 0.0 0:13.80 1 load_base.sh = =20 3920 mjt 39 19 5660 936 R 3.0 0.0 0:06.05 2 load_base.sh top - 11:09:24 up 15:30, 2 users, load average: 4.99, 3.55, 1.63 PID USER PR NI VIRT SHR S %CPU %MEM TIME+ #C COMMAND = =20 3917 mjt 25 0 5660 936 R 99.6 0.0 6:11.35 0 load_base.sh = =20 3918 mjt 24 0 5660 936 R 99.6 0.0 6:11.34 3 load_base.sh = =20 3916 mjt 39 0 5660 936 R 65.7 0.0 3:28.95 2 load_base.sh = =20 3919 mjt 39 19 5660 936 R 7.0 0.0 0:23.54 1 load_base.sh = =20 3920 mjt 39 19 5660 936 R 3.0 0.0 0:10.33 2 load_base.sh top - 11:10:57 up 15:32, 2 users, load average: 4.99, 3.94, 1.95 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND = =20 3917 mjt 22 0 5660 1136 936 R 99.5 0.0 7:51.62 load_base.sh = =20 3918 mjt 21 0 5660 1136 936 R 99.5 0.0 7:51.61 load_base.sh = =20 3916 mjt 39 0 5660 1136 936 R 53.7 0.0 4:25.26 load_base.sh = =20 3919 mjt 39 19 5660 1136 936 R 7.0 0.0 0:29.92 load_base.sh = =20 3920 mjt 39 19 5660 1136 936 R 3.0 0.0 0:13.13 load_base.sh top - 11:12:32 up 15:33, 2 users, load average: 4.99, 4.22, 2.24 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ #C COMMAND = =20 3917 mjt 35 0 5660 1136 936 R 99.9 0.0 9:28.56 0 load_base.s= h =20 3918 mjt 34 0 5660 1136 936 R 99.5 0.0 9:28.54 3 load_base.s= h =20 3916 mjt 35 0 5660 1136 936 R 61.7 0.0 5:19.77 2 load_base.s= h =20 3919 mjt 39 19 5660 1136 936 R 6.0 0.0 0:36.07 1 load_base.s= h =20 3920 mjt 39 19 5660 1136 936 R 3.0 0.0 0:15.82 2 load_base.sh $ ./load.sh 7 top - 11:13:49 up 15:35, 2 users, load average: 5.17, 4.40, 2.45 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ #C COMMAND = =20 3952 mjt 29 0 5660 1140 936 R 99.9 0.0 0:33.53 2 load_base.s= h =20 3950 mjt 31 0 5660 1140 936 R 99.5 0.0 0:33.33 1 load_base.s= h =20 3953 mjt 30 0 5660 1140 936 R 55.7 0.0 0:16.82 3 load_base.s= h =20 3951 mjt 39 0 5660 1140 936 R 43.8 0.0 0:16.70 3 load_base.s= h =20 3949 mjt 39 0 5660 1140 936 R 23.9 0.0 0:13.18 0 load_base.s= h =20 3954 mjt 39 19 5660 1140 936 R 2.0 0.0 0:00.64 0 load_base.s= h =20 3955 mjt 39 19 5660 1140 936 R 2.0 0.0 0:00.64 0 load_base.s= h =20 top - 11:14:53 up 15:36, 2 users, load average: 6.38, 4.91, 2.76 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ #C COMMAND = =20 3950 mjt 23 0 5660 1140 936 R 99.9 0.0 1:39.67 1 load_base.s= h =20 3952 mjt 21 0 5660 1140 936 R 99.9 0.0 1:39.87 2 load_base.s= h =20 3951 mjt 39 0 5660 1140 936 R 52.7 0.0 0:49.91 3 load_base.s= h =20 3953 mjt 22 0 5660 1140 936 R 47.8 0.0 0:49.95 3 load_base.s= h =20 3949 mjt 39 0 5660 1140 936 R 43.8 0.0 0:38.70 0 load_base.s= h =20 3954 mjt 39 19 5660 1140 936 R 2.0 0.0 0:01.90 0 load_base.s= h =20 3955 mjt 39 19 5660 1140 936 R 2.0 0.0 0:01.90 0 load_base.sh --=20 mjt --mdGUb96ZZNqpHCXz Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) iD8DBQFCf0h+IqNMpVm8OhwRAluaAJ0afGc2Bf/v/W3Tp9ALMhwzf6McFwCgiToy nbnTVOdZqjvyai1aMwP9Jlg= =kpvg -----END PGP SIGNATURE----- --mdGUb96ZZNqpHCXz-- - 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/