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Messages in this thread Complete thread (EXPERIMENTAL) |
Andrew Morton wrote:
Ya, we think the AIM stuff is getting a little old. The basic idea is fine, but
many of the tests do _very little work. We (OSDL) would like to re-do
AIM9+7 and make it more useful. We'd love to have some input from everyone....
For example, how big a file should we create for a real creat() test ?
cliffwAndrew Morton wrote:
Oh, commercial fs vendors must really love tuning for this benchmark....
sigh....Hans Reiser wrote:
unlink(filename); /* of course */Andrew and Chris, are these changes in performance definitely due to VM
changes (and not some difference I am not thinking of between 2.5 and
2.4 reiserfs code)?
aim9 is just doingfor (lots) close(creat(filename)) It makes 80% of the files less than some amount (100 bytes, or 1k, or 4k, depending on how mean you want to be to ext2;-) ), then 80% of the remaining 20% less than 10 times that amount then....There is more than one version of the file size generation code, so make sure you got the one that works as I described above. I am looking for a formula to smooth the above behavior into some sort of gentle curve rather than sharp bands, but I haven't found it yet. Hans | ||||||||||
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