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[Bug nptl/4209] Performance issue: NPTL semaphores work slower than linuxthreads semaphores
- From: "bart dot vanassche at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 5 Sep 2007 12:44:44 -0000
- Subject: [Bug nptl/4209] Performance issue: NPTL semaphores work slower than linuxthreads semaphores
- References: <20070317113630.4209.bart.vanassche@gmail.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From bart dot vanassche at gmail dot com 2007-09-05 12:44 -------
(In reply to comment #8)
> For some time now the version in cvs does things differently. It of course is
> always thread safe, unlike your code, so the benchmark as-is is not usable.
Apparently these optimizations are not yet included in the most recent glibc
release (2.6.1) ? These are the changes I found in CVS:
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/nptl/sysdeps/unix/sysv/linux/sem_post.c.diff?r1=1.6&r2=1.7&cvsroot=glibc&f=h
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c.diff?r1=1.5&r2=1.6&cvsroot=glibc&f=h
...
--
http://sourceware.org/bugzilla/show_bug.cgi?id=4209
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