Jeff Tchang wrote:
[ ... ]
When I attempt to write many small files or remove a directory is when the slowness kicks in. Is this just something due to Raid5? Here is the output of Bonnie++:

Small writes are pretty much the worst-case scenario for RAID-5, and it's normal to see a very significant performance drop-- by up to an order of magnitude-- from the performance of a bare drive. Good RAID controllers with lots of RAM can reduce the performance hit to perhaps less than a factor of 2.

Choosing RAID-1 rather than RAID-5 for situations which are not read-only or read-mostly is probably a good idea.

--
-Chuck

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