Disappointing speed with ZFS
Ivan Voras
ivoras at freebsd.org
Tue Feb 12 11:31:04 UTC 2008
Alexey Tarasov wrote:
> tty ad4 ad5 ad6 cpu
> tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id
> 0 347 7.36 1 0.01 57.35 43 2.42 42.84 44 1.84 1 0 1 0 98
> 0 606 0.00 0 0.00 58.62 31 1.76 63.02 246 15.14 0 0 3 0 97
> 2 5334 0.00 0 0.00 57.14 7 0.37 64.00 355 22.20 0 0 2 0 97
> 2 3194 0.00 0 0.00 0.00 0 0.00 63.35 295 18.26 0 0 2 1 97
> 0 148 0.00 0 0.00 0.00 0 0.00 63.90 336 20.97 0 0 0 1 99
> 0 453 0.00 0 0.00 55.87 87 4.72 64.00 290 18.14 1 0 3 0 96
Sorry, can't help you. I was expecting to see a lot of small
transactions, indicating seeking across the file system, but the numbers
seem normal enough.
Is the drive & ZFS topology "normal" - you don't perhaps have a zpool
made of multiple partitions/slices on the same drive? Can you send the
output of "zpool status"?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: OpenPGP digital signature
Url : http://lists.freebsd.org/pipermail/freebsd-current/attachments/20080212/cc77e32e/signature.pgp
More information about the freebsd-current
mailing list