From: Andrew Morton <akpm@digeo.com>
To: Con Kolivas <conman@kolivas.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [BENCHMARK] gcc3.2 v 2.95.3 (contest and linux-2.5.38)
Date: Sun, 22 Sep 2002 20:41:51 -0700 [thread overview]
Message-ID: <3D8E8D7F.810EF57F@digeo.com> (raw)
In-Reply-To: 1032750261.3d8e84b5486a9@kolivas.net
Con Kolivas wrote:
>
> I performed contest benchmarks on kernel 2.5.38 when the kernel is compiled with
> gcc3.2 to gcc2.95.3
>
> warning: The following benchmarks may be disturbing to some viewers:
>
> No Load:
> Kernel Time CPU
> 2.5.38 68.25 99%
> 2.5.38-gcc32 103.03 99%
>
Try gcc-2.91.66. It might break the 45 second mark.
> IO Full Load:
> Kernel Time CPU
> 2.5.38 170.21 42%
> 2.5.38-gcc32 1405.25 8%
The streaming write is stalling gcc's read for long enough for gcc's
working set to be evicted. And the working set cannot be reestablished
because the streaming write prevents it. Meltdown.
I have fixed this. Hang around.
next prev parent reply other threads:[~2002-09-23 3:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-23 3:04 [BENCHMARK] gcc3.2 v 2.95.3 (contest and linux-2.5.38) Con Kolivas
2002-09-23 3:10 ` Robert Love
2002-09-23 3:16 ` Con Kolivas
2002-09-23 11:06 ` Mark Veltzer
2002-09-23 13:56 ` Daniel Jacobowitz
2002-09-23 3:28 ` Robert Love
2002-09-23 3:41 ` Andrew Morton [this message]
2002-09-23 3:46 ` Daniel Jacobowitz
2002-09-23 3:50 ` Con Kolivas
[not found] ` <3D8E9158.4E3DE029@digeo.com>
[not found] ` <1032754853.3d8e96a520836@kolivas.net>
[not found] ` <3D8E988F.DCB3196D@digeo.com>
2002-09-23 5:13 ` Con Kolivas
2002-09-23 7:20 ` Axel H. Siebenwirth
2002-09-23 3:47 ` Robert Love
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