Phoronix Benchmarks: Waht's wrong with FreeBSD 8.0?
ivoras at freebsd.org
Mon Nov 30 14:24:38 UTC 2009
Holger Kipp wrote:
> On Mon, Nov 30, 2009 at 02:49:17PM +0100, Ivan Voras wrote:
>> On the other hand, random IO is negatively influenced by readahead :)
> Parallel Random I/O gives better results on Raid 5 than a single sequential
> read :-) I also found FreeBSD UFS with Softupdates handling directories with
> many small files much better than Linux and ReiserFS (same hardware) - at least
> a simple ls returned much quicker on FreeBSD (factor 5 to 10).
Yes, until ext4 I was always surprised how bad Linux ext2/3 handled
large metadata operations (file deletions and creations). UFS+SU
definitely has places where it shines.
> With FreeBSD we have a system that works ok out of the box, but for real-world
> usage needs some tuning to be optimised for the specific task.
Of course. But I think the issue at hand is that there really is more
work to do to catch up on average IO performance.
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