For what it's worth, our organization did extensive tests on many
filesystems benchmarking their performance when they are 90 - 95% full.
Only XFS retained most of its performance when it was "mostly
full" (ext4 was not tested)... so, if you are thinking of pushing
things to the limits, that might be something worth considering.
Brian
On Jan 30, 2009, at 11:18 AM, stephen mulcahy wrote:
Bryan Duxbury wrote:
Hm, very interesting. Didn't know about that. What's the purpose of
the reservation? Just to give root preference or leave wiggle room?
If it's not strictly necessary it seems like it would make sense to
reduce it to essentially 0%.
AFAIK It is needed for defragmentation / fsck to work properly and
your filesystem performance will degrade a lot if you reduce this to
0% (but I'd love to hear otherwise :)
-stephen
