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
next prev 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 2.5.38-mm2 dbench $N times 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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