From: Steven Cole <scole@lanl.gov>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.4.1pre8 slowdown on dbench tests
Date: Thu, 18 Jan 2001 15:52:01 -0700 [thread overview]
Message-ID: <01011815520101.01097@spc.esa.lanl.gov> (raw)
On Thu, 18 Jan 2001, Marcelo Tosatti wrote:
> On my dbench runs I've noted a slowdown between pre4 and pre8 with 48
> threads. (128MB, 2 CPU's machine)
I ran dbench 48 four times in succession for 2.4.0 and 2.4.1-pre8.
The change in performance appears to be not significant.
This was performed with a Dell 420 dual P-III (733 MHz), with a ST317221A,
ATA DISK drive and ReiserFS 3.6.25.
Each test was done under the same conditions, running KDE 2.0, one xterm,
right after booting.
2.4.0:
Average 9.07868 MB/sec
Throughput 9.03546 MB/sec (NB=11.2943 MB/sec 90.3546 MBit/sec)
Throughput 8.99614 MB/sec (NB=11.2452 MB/sec 89.9614 MBit/sec)
Throughput 8.87756 MB/sec (NB=11.097 MB/sec 88.7756 MBit/sec)
Throughput 9.40556 MB/sec (NB=11.7569 MB/sec 94.0556 MBit/sec)
2.4.1-pre8:
Average 9.25707 MB/sec
Throughput 8.93444 MB/sec (NB=11.1681 MB/sec 89.3444 MBit/sec)
Throughput 9.43609 MB/sec (NB=11.7951 MB/sec 94.3609 MBit/sec)
Throughput 9.5075 MB/sec (NB=11.8844 MB/sec 95.075 MBit/sec)
Throughput 9.15026 MB/sec (NB=11.4378 MB/sec 91.5026 MBit/sec)
Steven
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next reply other threads:[~2001-01-18 22:52 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-18 22:52 Steven Cole [this message]
2001-01-18 21:49 ` Marcelo Tosatti
[not found] <01012208583400.01639@spc.esa.lanl.gov>
2001-01-22 20:30 ` Marcelo Tosatti
2001-01-22 23:11 ` Jens Axboe
2001-01-23 20:29 ` Steven Cole
2001-01-23 20:54 ` Jens Axboe
2001-01-24 16:08 ` Steven Cole
2001-01-24 16:44 ` Jens Axboe
2001-01-24 17:03 ` Steven Cole
-- strict thread matches above, loose matches on Subject: below --
2001-01-18 17:17 Marcelo Tosatti
2001-01-18 20:18 ` Szabolcs Szakacsits
2001-01-19 2:23 ` Szabolcs Szakacsits
2001-01-19 2:13 ` Jens Axboe
2001-01-19 5:49 ` Szabolcs Szakacsits
2001-01-19 0:16 ` Andrea Arcangeli
2001-01-18 23:51 ` Marcelo Tosatti
2001-01-19 1:43 ` Jens Axboe
2001-01-19 1:40 ` Jens Axboe
2001-01-19 1:46 ` Andi Kleen
2001-01-19 1:47 ` Jens Axboe
2001-01-19 2:08 ` Andi Kleen
2001-01-19 2:10 ` Jens Axboe
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