Alex Tomas wrote:
- Large file deletion
- Valerie had recently tested large file deletion on ext3/4, but
did not see the expected performance gain with ext4 due to compact
metadata when using extents.
any details?
Ok, I found my mistake. There was a typo in my test script and the
pagecache was not flushed between the file creation and the deletion.
Here are the results I obtain with a 2.6.17-rc7 kernel to delete a 100GB
file:
ext3 : real 2m35.048s user 0m0.000s sys 0m6.424s
ext4 : real 0m11.160s user 0m0.000s sys 0m5.532s
xfs : real 0m0.377s user 0m0.004s sys 0m0.004s
The performance gain with ext4 is much larger when running a good test...
Sorry the wrong information,
Valérie
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