Poor ZFS performance
frederique at isafeelin.org
Sat May 2 09:22:45 UTC 2009
> 733843456 bytes transferred in 61.124812 secs (12005656 bytes/sec)
That is very low. I get about 60MB/sec in this way. Adding bs=1m it'll
go up to 240MB/sec even (raidz1 with 4*1TB).
> CPU: 0.4% user, 0.0% nice, 14.3% system, 4.5% interrupt, 80.8% idle
> Mem: 1950M Active, 868M Inact, 537M Wired, 238M Cache, 363M Buf, 87M Free
> Swap: 1024M Total, 101M Used, 923M Free, 9% Inuse
> PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
> 8402 nf 1 50 0 4604K 788K zio->i 0 0:03 8.59% dd
Could you show top -S ?
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