DBT-2 anticipatory scheduler and filesystem results with 2.6.1

markw
2004-01-20T00:33:28Z

Hi Nick,

I ran some dbt-2 tests against 5 filesystems with 2.6.1-mm4 and 2.6.1. I
see a degradation from 0 to 7% in throughput. In most cases there
appears to be a significant difference in the i/o wait and user time
(for PostgreSQL) between 2.6.1 and 2.6.1-mm4, where the i/o wait time is
going up. Thought you might be interested in the results since there
was a tuning patch in 2.6.1-mm3. I have links to more detailed results
(readprofile) here:
http://developer.osdl.org/markw/fs/project_results.html

but here's a summary:

% throughput change from 2.6.1 to 2.6.1-mm4
ext2 -5.9%
ext3 -5.1%
jfs -7.0%
reiserfs -2.2%
xfs -0.3%

--
Mark Wong - - markw@osdl.org
Open Source Development Lab Inc - A non-profit corporation
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(503) 626-2455 x 32 (office)
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