From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 20 Sep 2001 16:01:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 20 Sep 2001 16:01:17 -0400 Received: from mailout04.sul.t-online.com ([194.25.134.18]:26632 "EHLO mailout04.sul.t-online.de") by vger.kernel.org with ESMTP id ; Thu, 20 Sep 2001 16:01:03 -0400 Date: Thu, 20 Sep 2001 22:01:21 +0200 From: Tobias Diedrich To: Robert Love Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] Preemption Latency Measurement Tool Message-ID: <20010920220121.A18683@router.ranmachan.dyndns.org> Mail-Followup-To: Tobias Diedrich , Robert Love , linux-kernel@vger.kernel.org In-Reply-To: <1000939458.3853.17.camel@phantasy> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1000939458.3853.17.camel@phantasy> User-Agent: Mutt/1.3.22i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Should the patch work with SMP systems ? Here is what I get: Worst 20 latency times of 1322 measured in this period. usec cause mask start line/file address end line/file 988940 reacqBKL 0 1375/sched.c c0117ba1 772/sched.c 988940 spin_lock 0 129/file_table.c c013f500 135/page_alloc.c 988940 spin_lock 0 103/page_alloc.c c0136fd9 251/timer.c 988940 spin_lock 0 129/file_table.c c013f500 135/page_alloc.c 988940 spin_lock 0 63/fork.c c0117efc 135/page_alloc.c 988940 spin_lock 0 129/file_table.c c013f500 135/page_alloc.c 988940 spin_lock 0 129/file_table.c c013f500 135/page_alloc.c 988940 spin_lock 0 592/af_unix.c c02ddd88 594/af_unix.c 988940 spin_lock 0 43/fork.c c0117ddc 829/inode.c 988940 spin_lock 0 547/sched.c c0115bf5 606/signal.c 988940 spin_lock 0 770/sched.c c011641c 80/dcache.c 988940 spin_lock 0 36/dec_and_lock.c c0319573 280/time.c 988940 spin_lock 0 36/dec_and_lock.c c0319573 280/time.c 988940 BKL 0 714/ll_rw_blk.c c01eaec1 80/dcache.c 988939 spin_lock 0 592/af_unix.c c02ddd88 594/af_unix.c 988939 spin_lock 0 714/ll_rw_blk.c c01eaec1 80/dcache.c 988939 unknown 0 76/softirq.c c011f410 782/sched.c 988939 spin_lock 0 592/af_unix.c c02ddd88 1380/sched.c 988939 spin_lock 0 176/fork.c c0118608 696/namei.c 988939 spin_lock 0 1684/af_unix.c c02e0de6 734/dcache.c And another one about 2 seconds after the last flush: Worst 20 latency times of 579 measured in this period. usec cause mask start line/file address end line/file 988939 spin_lock 0 592/af_unix.c c02ddd88 133/file_table.c 988930 spin_lock 0 770/sched.c c011641c 697/sched.c 988930 spin_lock 0 547/sched.c c0115bf5 133/file_table.c 988930 spin_lock 0 1512/es1371.c c02408e0 133/file_table.c 6613 spin_lock 1 547/sched.c c0115bf5 697/sched.c 6401 spin_lock 0 547/sched.c c0115bf5 647/irq.c 2557 spin_lock 0 547/sched.c c0115bf5 647/signal.c 833 spin_lock 0 547/sched.c c0115bf5 133/file_table.c 364 BKL 6 710/tty_io.c c01d1eed 712/tty_io.c 283 BKL 4 710/tty_io.c c01d1eed 280/time.c 243 BKL 0 59/ioctl.c c014fbe5 685/socket.c 231 BKL 4 710/tty_io.c c01d1eed 697/sched.c 218 spin_lock 0 798/vmscan.c c01366a5 857/vmscan.c 210 spin_lock 0 3169/tcp_input.c c02b5331 697/sched.c 191 spin_lock 2 468/netfilter.c c0285351 119/softirq.c 183 spin_lock 0 468/netfilter.c c0285351 280/time.c 176 spin_lock 0 468/netfilter.c c0285351 697/sched.c 168 BKL 0 26/readdir.c c014ff8c 28/readdir.c 134 ide0 0 585/irq.c c0108eb1 647/irq.c 134 BKL 0 980/inode.c c01691a3 997/inode.c -- Tobias PGP: 0x9AC7E0BC Hannover Fantreffen ML: mailto:fantreffen-request@mantrha.de?subject=subscribe Manga & Anime Treff Hannover: http://www.mantrha.de/