Date: Thu, 12 Nov 2009 20:05:37 -0500 From: Scott Ullrich <sullrich@gmail.com> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: Help ZFS FreeBSD 8.0 RC2 Write performance issue Message-ID: <d5992baf0911121705i2b05530bx84b06b5254fc1bc8@mail.gmail.com> In-Reply-To: <9bbcef730911121656x7615efcbu7dfb1ef060c2797c@mail.gmail.com> References: <11167f520911111050j36dd94far667c81e6f5c18e69@mail.gmail.com> <Pine.GSO.4.63.0911121147310.9126@muncher.cs.uoguelph.ca> <11167f520911121044l74744c30u5a4d9ca008ab863c@mail.gmail.com> <d5992baf0911121048o76c1543el2b4d9de84ffb107@mail.gmail.com> <11167f520911121101o403751ddmb544dfaf1c61bf1e@mail.gmail.com> <ed91d4a80911121219sa0f3fa3s934791725028a966@mail.gmail.com> <d5992baf0911121314k7f535f2cra2d3e8367774d8ca@mail.gmail.com> <9bbcef730911121328t342b2268oceba3712b52511d4@mail.gmail.com> <d5992baf0911121638x4cfec4edpb597faa47b1da54b@mail.gmail.com> <9bbcef730911121656x7615efcbu7dfb1ef060c2797c@mail.gmail.com>
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On Thu, Nov 12, 2009 at 7:56 PM, Ivan Voras <ivoras@freebsd.org> wrote: > 2009/11/13 Scott Ullrich <sullrich@gmail.com>: > I know it's a bit late now that you've settled on your equipment but > did you try discovering why you get performance so low you need SSDs > to cope? I think I've read somewhere that disabling ZIL should help > NFS performance - did you try it? I did try disabling ZIL and the performance was much better but I am overly cautious and would rather have it on. > Did you test your workload directly on the ZFS volume (without NFS) or with > another network file system like Samba? No, I was focused on NFS since this was originally a storage server for VMWare via NFS but since has been converted into a web server. Scott
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