ZFS, Dell PE2950
ivoras at freebsd.org
Wed Apr 16 08:57:50 UTC 2008
Benjeman J. Meekhof wrote:
> I posted earlier about some results with this same system using UFS2.
> Now trying to test ZFS. This is a Dell PE2950 with two Perc6
> controllers and 4 md1000 disk shelves with 750GB drives. 16GB RAM, dual
> quad core Xeon. I recompiled our kernel to use the ULE scheduler instead
> of default.
> I could not get through an entire run of iozone without a system
> reboot/crash. ZFS is clearly labeled experimental, of course.
> It seems to die for sure around 10 processes, sometimes less (this is
> the end of my output from iozone):
> Children see throughput for 10 readers = 135931.72 KB/sec
> Parent sees throughput for 10 readers = 135927.24 KB/sec
> Min throughput per process = 13351.26 KB/sec
> Max throughput per process = 14172.05 KB/sec
> Avg throughput per process = 13593.17 KB/sec
> Min xfer = 31586816.00 KB
Can you tell us how does this compare to UFS2 results you posted
previously? (since you used dd for UFS2 and now iozone for ZFS; what are
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