On Mon, 2003-03-10 at 14:48, Jon Nelson wrote: > > Before switching to Courier, I did a bit of benchmarking of mbox vs > > maildir, and ext3 vs reiserfs. The results are here: > > > > http://www.decisionsoft.com/pdw/mailbench.html > > Using the numbers at that website, I feel your conclusions are incorrect > or hastily drawn.
Hastily drawn - yes - I didn't have much time to spend on it. I'm not sure that they are incorrect. > I'm not going to include the 'ReiserFS2' numbers here > because they can't be compared to the ext3 numbers -- you performed no > tests with ext3 and the noatime,nodiratime flags -- thus the most > comparable are the ext3 and reiserfs columns as indicated. Fair point. > Then, simply comparing the numbers shows that ext3 beats or meets > reiserfs in SELECT.2, DELETE.1, FETCH.1, SEARCH.1 and SEARCH.2, making > ext3 slower in SELECT.1 and FETCH.2. That doesn't add up to (quote), > "Maildir + ReiserFS is a win on pretty much every front". > I would also caution you to be careful about drawing any kind of > conclusions from statistical variances that are very small -- the > difference between X seconds and X + 0.1 is hardly significant. Definitely. However, taking your two comments together, I would rephrase that as "where there is a significant difference (SELECT.1), reiserfs wins. I am less interested in the SEARCH statistics, as this is a less common operation." Also, the emphasis in my conclusion was on the Maildir aspect - this was the main point of the benchmark that I did Maildir vs MBX vs mbox. For me, the FS comparison was a side issue. > That being said, I *really* don't want this to degenerate into a "my > filesystem is better than your filesystem", because it's a pointless and > annoying argument. Too true. Paul -- Paul Warren, Client Services DecisionSoft Limited +44-1865-203192 http://www.decisionsoft.com ------------------------------------------------------- This SF.net email is sponsored by:Crypto Challenge is now open! Get cracking and register here for some mind boggling fun and the chance of winning an Apple iPod: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en _______________________________________________ courier-users mailing list [EMAIL PROTECTED] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
