linux-kernel - Re: mmotm 2008-09-08-18-32 uploaded

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Date:	Tue, 9 Sep 2008 10:37:41 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: mmotm 2008-09-08-18-32 uploaded

On Tue, 9 Sep 2008 19:25:44 +0900 KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> wrote:

> On Mon, 08 Sep 2008 18:35:16 -0700
> akpm@...ux-foundation.org wrote:
> 
> > The mm-of-the-moment snapshot 2008-09-08-18-32 has been uploaded to
> > 
> >    http://userweb.kernel.org/~akpm/mmotm/
> > 
> > It contains the following patches against 2.6.27-rc5:
> > 
> 
> I'll dig if I have time. This is just a report.
> 
> I tries UnixBench4.1 on x86_64/2cpu/1socket machine. (memory cgroup is enabled)
> 
> Following is comparison with a mmtom based on rc4.
> ===
> [rc4mm1]
> Execl Throughput                           3004.4 lps   (29.6 secs, 3 samples)
> C Compiler Throughput                      1017.9 lpm   (60.0 secs, 3 samples)
> Shell Scripts (1 concurrent)               5726.3 lpm   (60.0 secs, 3 samples)
> Shell Scripts (8 concurrent)               1124.3 lpm   (60.0 secs, 3 samples)
> Shell Scripts (16 concurrent)               576.0 lpm   (60.0 secs, 3 samples)
> Dc: sqrt(2) to 99 decimal places         125446.5 lpm   (30.0 secs, 3 samples)
> 
> [rc5mm1]
> Execl Throughput                           3006.5 lps   (29.8 secs, 3 samples)
> C Compiler Throughput                      1006.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (1 concurrent)               4863.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (8 concurrent)                943.7 lpm   (60.0 secs, 3 samples)
> Shell Scripts (16 concurrent)               482.7 lpm   (60.0 secs, 3 samples)
> Dc: sqrt(2) to 99 decimal places         124804.9 lpm   (30.0 secs, 3 samples)
> ==
> 15% down in shell script test. Any idea ? (scheduler ?)

Dunno.  There is a largel number of debugging patches at the tail of
the series so they should be the first thing to eliminate.

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