Fwd: Inconsistency in bonnie++ results for repeated runs
If anyone has any ideas on the possible cause of this then please let me know
and CC Judith.
---------- Forwarded Message ----------
Subject: Inconsistency in bonnie++ results for repeated runs
Date: Fri, 6 Feb 2004 04:53
From: Judith Lebzelter <judith@osdl.org>
To: <russell@coker.com.au>
Hello;
I found that my bonnie++ results are varying more than I would have
thought that they should, on this run for example:
http://khack.osdl.org/stp/286377/logs/run-log.txt
Sequential Input for the third set of runs for both the Per Chr
and Block measurements dropped off too much:
Version @version@ ------Sequential Output------ --Sequential Input-
--Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec
%CP stp1-000 1G 11676 99 39927 22 16889 8 10566 89 38059 12
201.2 0 stp1-000 1G 11673 99 39130 23 16927 11 10564 89 38071
11 180.2 0 stp1-000 1G 11214 96 31424 17 4086 2 7721 65
14441 5 137.2 0
Rewrites dropped as well.
Is there something I have not configured right or an option I am
missing? For most of our runs the three repeated data points do have a
reasonable deviation, but occasionally, one of the runs seems too far off
the other two.
This is the command being run for the above results:
/usr/bin/time bonnie++ -x 3 -u 0 -n1
On a 1CPU Host and on a single IDE disk/500M RAM, but I have found similar
issues on the 2CPU hosts.
We are using Bonnie++ Version: 1.02.
Is there a mailing list that would be more appropriate than direct mail?
If so please forward it.
Thanks;
Judith Lebzelter
OSDL
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