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On 23.12.2010 23:46, Gleb Kurtsou wrote:

> For testing I've used dbench with 16 processes on 1 Gb swap back md
> device, UFS + SoftUpdates:
> Old hash (Mb/s): 599.94  600.096 599.536
> SFH hash (Mb/s): 612.439 612.341 609.673
> 
> It's just ~1% improvement, but dbench is not a VFS metadata intensive
> benchmark. Subjectively it feels faster accessing maildir mailboxes
> with ~10.000 messages : )

Try blogbench if you need metadata-intensive operations, or even fsx.