From: Fabrice Bellard <fabrice@bellard.org>
To: degger@fhm.edu
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [Patch] Clear memory using memset instead of handcoded loop
Date: Sun, 03 Oct 2004 15:38:22 +0200 [thread overview]
Message-ID: <416000CE.7090103@bellard.org> (raw)
In-Reply-To: <C6661EF0-1531-11D9-8DA6-000A958E35DC@fhm.edu>
Applied.
Fabrice.
Daniel Egger wrote:
> Hija,
>
> while profiling the lastest qemu snapshot on OS X I discovered
> that one of the tb_hash clearing routines turnes up to be a
> "hotspot" during my typical test procedure which includes
> booting an installed Debian Sarge RC.
>
> Attached patch turnes three handcoded memory clearing routines
> into a call to memset which will be optimized by every serious
> compiler into either a very optimized inline sequence for the
> CPU or at least into a call of an optimized memory clearing
> function (bzero on Darwin 7.5 with gcc 3.3).
>
> Please CC me on replies.
>
>
>
> Servus,
> Daniel
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
next prev parent reply other threads:[~2004-10-03 13:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-03 11:45 [Qemu-devel] [Patch] Clear memory using memset instead of handcoded loop Daniel Egger
2004-10-03 13:38 ` Fabrice Bellard [this message]
2004-10-03 18:17 ` Karl Magdsick
2004-10-04 0:15 ` Daniel Egger
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