From: Soeren Sonnenburg <kernel@nn7.de>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Largest mallocs opteron vs. 32bit systems
Date: Tue, 27 Apr 2004 08:24:24 +0200 [thread overview]
Message-ID: <1083047064.3158.2.camel@localhost> (raw)
Hello...
I just did some tests trying to malloc() memory on an opteron and a xeon
system...
I wonder why I see regression for the opteron in 32bit mode. Comments
welcome (workarounds even more). Anyhow my observations:
malloc large block:
opteron -> up to 7G (64bit exe) -> up to 1500M (32bit exe)
xeon -> up to 2000M
malloc a couple of blocks of size 100M:
whole process (100 M steps)
opteron -> 7700M (64bit exe) -> up to 2200 (32bit exe)
xeon -> 2700M
So one 'looses' 500M.
Feedback welcome,
Soeren
next reply other threads:[~2004-04-27 6:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-27 6:24 Soeren Sonnenburg [this message]
2004-04-28 6:06 ` Largest mallocs opteron vs. 32bit systems Soeren Sonnenburg
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