From: Andy Wingo <wingo@pobox.com>
To: Neil Jerram <neil@ossau.uklinux.net>
Cc: Linas Vepstas <linasvepstas@gmail.com>,
Guile Development <guile-devel@gnu.org>
Subject: Re: Locks and threads
Date: Thu, 12 Mar 2009 23:13:49 +0100 [thread overview]
Message-ID: <m3vdqev17m.fsf@pobox.com> (raw)
In-Reply-To: <87iqmfwohh.fsf@arudy.ossau.uklinux.net> (Neil Jerram's message of "Thu, 12 Mar 2009 00:53:30 +0000")
Hey Neil,
On Thu 12 Mar 2009 01:53, Neil Jerram <neil@ossau.uklinux.net> writes:
> Thanks to a hint from helgrind, I think the problem might be that the
> symbols obarray is not thread-safe. But surely using a mutex for
> every symbol that Guile reads would be terrible for performance...
Dunno, in GStreamer we found that uncontended locks are cheap cheap
cheap. AFAIU they don't even cause context switches. And the reader will
be less important in terms of e.g. startup time once the VM lands.
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2009-03-12 22:13 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 [this message]
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
2009-03-16 22:57 ` Andy Wingo
2009-03-25 18:57 ` Neil Jerram
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