Date: Sat, 02 May 2009 11:22:38 +0200 From: Frederique Rijsdijk <frederique@isafeelin.org> To: nf <nf@wh3rd.net> Cc: freebsd-questions@freebsd.org Subject: Re: Poor ZFS performance Message-ID: <49FC10DE.9000401@isafeelin.org> In-Reply-To: <e2fbd2a10905011639x475c1fbex92508493449bff51@mail.gmail.com> References: <e2fbd2a10905011639x475c1fbex92508493449bff51@mail.gmail.com>
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nf wrote: > 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 ? -- Frederique
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