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From: Dave Hansen <dave@us.ibm.com>
To: Andrew Morton <akpm@digeo.com>
Cc: William Lee Irwin III <wli@holomorphy.com>,
	<linux-kernel@vger.kernel.org>
Subject: Re: 2.5.38-mm2 dbench $N times
Date: Tue, 24 Sep 2002 18:08:59 -0700 (PDT)	[thread overview]
Message-ID: <Pine.LNX.4.44.0209241802120.11685-100000@nighthawk.sr71.net> (raw)
In-Reply-To: <3D9103EB.FC13A744@digeo.com>

On Tue, 24 Sep 2002, Andrew Morton wrote:

> William Lee Irwin III wrote:
> > 
> > William Lee Irwin III wrote:
> > >> Taken on 32x/32G NUMA-Q:
> > >> Throughput 67.3949 MB/sec (NB=84.2436 MB/sec  673.949 MBit/sec)  16 procs
> > >> dbench 16  11.72s user 122.21s system 422% cpu 31.733 total
>
> dbench 16 on that sort of machine is a memory bandwidth test.
> And a dcache lock exerciser.  It basically doesn't touch the
> disk.  Something very bad is happening.
> 
> Anton can get 3000 MByte/sec ;)

Bill's Machine cost around $50, plus the cost to repair the walls that I 
crushed when hauling the pieces around.  Anton's cost $2 million.  Bill 
wins :)

Are you trying to bind the processes anywhere?  I wonder what would happen 
if you make it always run quad 0...
-- 
Dave Hansen
haveblue@us.ibm.com


  parent reply	other threads:[~2002-09-25  1:04 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-24 13:20 William Lee Irwin III
2002-09-24 17:47 ` Andrew Morton
2002-09-25  0:18   ` William Lee Irwin III
2002-09-25  0:25     ` William Lee Irwin III
2002-09-25  0:31     ` Andrew Morton
2002-09-25  0:39       ` William Lee Irwin III
2002-09-25  0:46         ` Andrew Morton
2002-09-25  1:08       ` Dave Hansen [this message]
2002-09-25  1:17         ` William Lee Irwin III
2002-09-25  6:03       ` Martin J. Bligh
2002-09-25 18:51         ` Andrew Theurer
2002-09-25 20:57           ` Martin J. Bligh
2002-09-25 21:05             ` Andrew Theurer
2002-09-25 23:57           ` William Lee Irwin III

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