From: "Harald Anlauf" <anlauf@gmx.de>
To: Alan Modra <amodra@bigpond.net.au>
Cc: binutils@sourceware.org
Subject: Re: Performance of ld on GFS (Global File System)
Date: Thu, 25 Sep 2008 13:48:00 -0000 [thread overview]
Message-ID: <20080925134728.228300@gmx.net> (raw)
In-Reply-To: <20080925025405.GJ17852@bubble.grove.modra.org>
Hi Alan,
> On Wed, Sep 24, 2008 at 10:02:45PM +0200, Harald Anlauf wrote:
> > Operations like open and close are probably quite expensive.
>
> In that case you might want to tweak bfd/cache.c BFD_CACHE_MAX_OPEN.
I increased BFD_CACHE_MAX_OPEN from 10 to 100, which I presumed to
be large enough. On GFS, system time and wall time for linking went down
between 30 to 40%, which is good, but still far from a factor 100 or so. :-(
(The change was neutral on the system with local disk.)
(Empirically increasing BFD_CACHE_MAX_OPEN to 200 did not improve
things further.)
Anything else I can try? Any other option that reduces the number of
filesystem related system calls may be helpful.
Cheers,
Harald
--
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next prev parent reply other threads:[~2008-09-25 13:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-24 20:03 Harald Anlauf
2008-09-25 2:54 ` Alan Modra
2008-09-25 13:48 ` Harald Anlauf [this message]
2008-09-26 14:47 ` Ian Lance Taylor
2008-09-29 9:56 ` Harald Anlauf
2008-09-29 16:49 ` Ian Lance Taylor
2008-09-29 21:56 ` Harald Anlauf
2008-09-30 16:46 ` Harald Anlauf
2008-10-03 22:34 ` Cary Coutant
2008-10-06 8:02 ` Harald Anlauf
2008-10-13 15:16 ` Harald Anlauf
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