Re: Some dbench 32 results for 2.4.8-pre8, 2.4.7-ac10, and 2.4.7

Steven Cole (elenstev@mesatop.com)
Fri, 10 Aug 2001 07:26:47 -0600


Linus Torvalds wrote:
>Does the numbers change if you do something like
>
> killall -STOP kupdated
> echo 80 64 64 256 500 6000 90 > /proc/sys/vm/bdflush
>
>to make it less eager to write stuff out? (That just stops the
>every-five-second flush, and makes the dirty balancing numbers be 80/90%
>instead of the default 30/60%)
>
>In particular, the dirty balancing worked really badly before, and was
>just fixed. I suspect that the bdflush numbers were tuned with the
>badly-working case, and they might be a bit too aggressive for dbench
>these days..

Sorry Linus for the late reply, but I went to bed just before your message.
I re-ran dbench 32 with the settings above. Here are the results:
(Same conditions as in the previous tests otherwise). Now, off to my day job.

Run #1 Throughput 12.7943 MB/sec 2.4.8-pre8
Run #2 Throughput 12.667 MB/sec 2.4.8-pre8
Run #3 Throughput 12.7091 MB/sec 2.4.8-pre8

Run #4 Throughput 13.7765 MB/sec 2.4.7
Run #5 Throughput 13.9632 MB/sec 2.4.7
Run #6 Throughput 13.9318 MB/sec 2.4.7

Steven

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