Michael Darling wrote:
> I am preparing a new server, and benchmarking EXT3 against XFS, both using
> software RAID and hardware RAID using a 3ware 9650SE-4LPML.
> Using bonnie++ as a benchmark, I am seeing significant performance boosts in
> my block sequential reads and writes moving from EXT3 to XFS. I am aware
> that XFS won't create and delete files as quickly as EXT3, however I am
> seeing drops from 29455/second to 1957/second using software RAID, and from
> 32524/second to 189/second using hardware RAID. I'm not sure if when using
> software raid, if creating and deleting files should drop to 6.6% of EXT3.
> But, what I'm pretty sure of, is when using hardware raid, that creating and
> deleting files shouldn't drop to 0.6% of EXT3.
So I played with this a little on 2.6.25, on plain partitions.
I saw similar numbers; for example, sequential creates:
then on a whim I tried an external log on a devicemapper zero target :)
Others can probably wax eloquent as to why xfs is slower on this test,
but it's not unique to your setup, at least.