From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32424 invoked by alias); 25 Mar 2007 14:28:45 -0000 Received: (qmail 32389 invoked by uid 48); 25 Mar 2007 14:28:34 -0000 Date: Sun, 25 Mar 2007 14:28:00 -0000 Message-ID: <20070325142834.32388.qmail@sourceware.org> From: "bart dot vanassche at gmail dot com" To: glibc-bugs@sources.redhat.com In-Reply-To: <20070325101629.4274.bart.vanassche@gmail.com> References: <20070325101629.4274.bart.vanassche@gmail.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug nptl/4274] Performance issue: pthread_cond_signal() causes three context switches instead of one X-Bugzilla-Reason: CC Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org X-SW-Source: 2007-03/txt/msg00072.txt.bz2 ------- Additional Comments From bart dot vanassche at gmail dot com 2007-03-25 15:28 ------- Are you sure that this is already fixed ? These are the results with the latest CVS version (2007-03-25): $ /home/bart/glibc-cvs/lib/libc.so.6 GNU C Library development release version 2.5.90, by Roland McGrath et al. Copyright (C) 2007 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Compiled by GNU CC version 4.1.2 20061115 (prerelease) (SUSE Linux). Compiled on a Linux >>2.6.18.6<< system on 2007-03-25. Available extensions: crypt add-on version 2.1 by Michael Glad and others Native POSIX Threads Library by Ulrich Drepper et al BIND-8.2.3-T5B For bug reporting instructions, please see: . $ LD_LIBRARY_PATH=/home/bart/glibc-cvs/lib: /home/bart/glibc-cvs/lib/ld-linux.so.2 ./glibc-cvs-condvar-perf NPTL mutex elapsed: 4054 us; per iteration: 40 ns / 5e-05 csw c.v. ping-pong test elapsed: 421526 us; per iteration: 4215 ns / 6 csw signal ping-pong test elapsed: 430622 us; per iteration: 4306 ns / 4 csw signal ping-pong no mtx elapsed: 207861 us; per iteration: 2078 ns / 2 csw -- What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|FIXED | http://sourceware.org/bugzilla/show_bug.cgi?id=4274 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.