Sure, here is an example iozone output when I tested UFS2. Same
hardware config as with ZFS test.
#gstripe label -v -s 128k test /dev/mfid0 /dev/mfid2
#newfs -U -b 65536 /dev/stripe/test
"Throughput report Y-axis is type of test X-axis is number of processes"
"Record size = 512 Kbytes "
"Output is in Kbytes/sec"
" Initial write " 576953.38 613457.19 627091.58 626818.95
641763.54 626005.11 579073.92 553088.47 557498.71 556188.95
553340.92 548801.62
" Rewrite " 580755.31 621562.75 638209.55 573171.69
633114.27 616501.92 542520.70 541662.21 525603.64 529194.37
506230.25 490589.89
" Read " 505978.28 546837.12 565786.34 310994.23
309813.64 329930.91 351162.15 376940.64 408561.11 432157.69
452106.75 470176.39
" Re-read " 523917.72 581796.50 592393.28 314724.70
308485.12 327409.40 350913.96 381370.12 408105.25 434168.93
458742.49 475407.44
-Ben
Ivan Voras wrote:
Benjeman J. Meekhof wrote:
Hi,
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
your conclusions?)
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