From: Nick Piggin <piggin@cyberone.com.au>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Performance of -mm2 and -mm4
Date: Tue, 24 Aug 2004 13:23:24 +1000 [thread overview]
Message-ID: <412AB4AC.8040702@cyberone.com.au> (raw)
In-Reply-To: <336080000.1093280286@[10.10.2.4]>
Martin J. Bligh wrote:
>Kernbench: (make -j vmlinux, maximal tasks)
> Elapsed System User CPU
> 2.6.8.1 43.90 87.76 572.94 1505.67
> 2.6.8.1-mm1 44.26 87.71 574.73 1496.33
> 2.6.8.1-mm2 44.27 90.27 574.84 1502.33
> 2.6.8.1-mm4 45.87 97.60 595.23 1510.00
>
>mm2 seems to take slightly (but consistently) more systime than mm1, and
>mm4 is significantly worse still ;-(
>
>
Increasing base_timeslice here takes about 10s off the user time,
and maybe 1-2 off elapsed. You may see a better improvement because
the machine I'm testing on has very small caches; I assume you are
using a 32-way NUMAQ with 1-2MB caches?
next prev parent reply other threads:[~2004-08-24 3:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-23 16:58 Performance of -mm2 and -mm4 Martin J. Bligh
2004-08-23 21:31 ` Jesse Barnes
2004-08-24 0:41 ` Nick Piggin
2004-08-24 1:29 ` Con Kolivas
2004-08-25 22:29 ` Martin J. Bligh
2004-08-24 3:23 ` Nick Piggin [this message]
2004-08-24 3:26 ` Martin J. Bligh
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