From: ludo@gnu.org (Ludovic Courtès)
To: guile-devel@gnu.org
Subject: Re: Locks and threads
Date: Sat, 14 Mar 2009 15:23:18 +0100 [thread overview]
Message-ID: <874oxwtc89.fsf@gnu.org> (raw)
In-Reply-To: m3vdqev17m.fsf@pobox.com
Hello!
Andy Wingo <wingo@pobox.com> writes:
> Dunno, in GStreamer we found that uncontended locks are cheap cheap
> cheap. AFAIU they don't even cause context switches.
On GNU/Linux they are implemented using futexes and the kernel is not
invoked when there's no contention.
Still, I would measure the impact on `module-define!' and `module-ref'
because that's at least an additional function call.
Thanks,
Ludo'.
next prev parent reply other threads:[~2009-03-14 14:23 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-11 22:31 Locks and threads Neil Jerram
2009-02-11 23:05 ` Neil Jerram
2009-02-11 23:32 ` Ludovic Courtès
2009-02-11 23:30 ` Linas Vepstas
2009-02-11 23:53 ` Neil Jerram
2009-02-12 0:18 ` Linas Vepstas
2009-02-12 20:51 ` Ludovic Courtès
2009-02-11 23:30 ` Ludovic Courtès
2009-02-12 12:55 ` Greg Troxel
2009-02-12 18:00 ` Ken Raeburn
2009-02-12 21:14 ` Ludovic Courtès
2009-02-14 1:25 ` Ken Raeburn
2009-02-14 16:09 ` Ludovic Courtès
2009-03-05 20:41 ` Neil Jerram
2009-03-04 23:49 ` Neil Jerram
2009-03-05 3:54 ` Linas Vepstas
2009-03-05 19:46 ` Neil Jerram
2009-03-05 20:05 ` Neil Jerram
2009-03-05 20:40 ` Linas Vepstas
2009-03-05 20:49 ` Neil Jerram
2009-03-05 20:57 ` Linas Vepstas
2009-03-05 21:25 ` Neil Jerram
2009-03-05 21:56 ` Linas Vepstas
2009-03-06 11:01 ` Andy Wingo
2009-03-06 12:36 ` Linas Vepstas
2009-03-06 22:05 ` Ludovic Courtès
2009-03-08 22:04 ` Neil Jerram
2009-03-25 19:00 ` Neil Jerram
2009-03-25 22:08 ` Ludovic Courtès
2009-03-05 21:35 ` Ludovic Courtès
2009-03-10 23:57 ` Neil Jerram
2009-03-12 0:07 ` Neil Jerram
2009-03-12 0:53 ` Neil Jerram
2009-03-12 1:29 ` Linas Vepstas
2009-03-12 3:09 ` Clinton Ebadi
2009-03-25 22:13 ` Neil Jerram
2009-03-25 22:34 ` Linas Vepstas
2009-03-12 22:13 ` Andy Wingo
2009-03-13 19:13 ` Neil Jerram
2009-03-25 23:19 ` Neil Jerram
2009-03-26 3:40 ` Linas Vepstas
2009-03-26 8:02 ` Neil Jerram
2009-03-26 18:39 ` Linas Vepstas
2009-03-26 9:10 ` Ludovic Courtès
2009-03-26 22:01 ` Neil Jerram
2009-03-26 23:12 ` Ludovic Courtès
2009-03-26 22:51 ` Neil Jerram
2009-03-27 3:15 ` Linas Vepstas
2009-03-14 14:23 ` Ludovic Courtès [this message]
2009-03-16 22:57 ` Andy Wingo
2009-03-25 18:57 ` Neil Jerram
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