Date: Fri, 29 May 2009 10:40:38 +0100 From: Pete French <petefrench@ticketswitch.com> To: dan.naumov@gmail.com Cc: freebsd-stable@freebsd.org Subject: Re: ZFS on top of GELI / Intel Atom 330 system Message-ID: <E1M9yZq-000Pjq-2s@dilbert.ticketswitch.com> In-Reply-To: <cf9b1ee00905290217m1698a7b6rb2dbc2099c70ac1@mail.gmail.com>
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> Ouch, that does indeed sounds quite slow, especially considering that > a dual core Athlon 6400 is pretty fast CPU. Have you done any > comparison benchmarks between UFS2 with Softupdates and ZFS on the Not at all - but, now you have got me curious, I just went to a completely different system (four core opteron box, no ecnryption, four 15k SCSI drives and a zpool of 2 mirrored pairs), and that also gave me about 25 meg/second! I am using the wildly unscientific "how long to copy a file" method to benchmark here, with the file residing on a different drive, which can provided it at 80 meg/second. > same system? What are the read/write numbers like? Have you done any > investigating regarding possible causes of ZFS working so slow on your > system? Just wondering if its an ATA chipset problem, a drive problem, > a ZFS problem or what... I have no idea, and now I think I need to look into it! certainly I should be getting better than 25 meg/sec out of the 15K SCSI's. -pete.
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