Date: Fri, 19 Dec 2008 11:12:36 +1100 From: Andrew Snow <andrew@modulus.org> To: Matt Simerson <matt@corp.spry.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS performance gains real or imaginary? Message-ID: <494AE6F4.30506@modulus.org> In-Reply-To: <22C8092E-210F-4E91-AA09-CFD38966975C@spry.com> References: <22C8092E-210F-4E91-AA09-CFD38966975C@spry.com>
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> Did I miss some major ZFS performance enhancements? ZFS under 7 is almost completely useless, since I can make it crash reliably by running "rsync", there's not alot of point talking about its speed! Would changes committed since mid-August (when I > built my last ZFS servers from -HEAD + the patch) and now explain this? Yes. > If so, then I really should be upgrading my production ZFS servers to > the latest -HEAD. Thats correct, that is the only way to get the best working version of ZFS. Of course, then everything is unstable and broken - eg. SMBFS became unusable for me and would crash the server. . ZFS > compression is effectively getting me 1/3 more disk space off my 1.5TB > disks You should try gzip-9 compression mode, it saves almost that much space again all over :-) - Andrew
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