Date: Mon, 18 Nov 2013 20:24:45 -0700 From: Eric Browning <ericbrowning@skaggscatholiccenter.org> To: Rick Romero <rick@havokmon.com> Cc: FreeBSD FS <freebsd-fs@freebsd.org> Subject: Re: Performance difference between UFS and ZFS with NFS Message-ID: <CAM=5oeDx2FW4rA-wyZRS4ejuz4Knamji5hzvi3Q8%2ByiWYBMpaw@mail.gmail.com> In-Reply-To: <20131118210328.Horde.ONsT69y3hBKUccCAO1qR4Q8@www.vfemail.net> References: <CAM=5oeCoj63hLmJq6hU6VKwf2bnGgbYNNY-yH9LisEs_wf4Bqg@mail.gmail.com> <20131118210328.Horde.ONsT69y3hBKUccCAO1qR4Q8@www.vfemail.net>
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@Rick R I will check on controller caching, I just left the defaults so I assume they are on and had cache flushing disabled already for ZFS. @Jason F. Changing to Solaris isn't an option right now and knowing Mac is a kissing cousin of FreeBSD I prefer to stay with what I know. It's been pretty rock solid so far. Thanks, On Mon, Nov 18, 2013 at 8:03 PM, Rick Romero <rick@havokmon.com> wrote: > > Quoting Eric Browning <ericbrowning@skaggscatholiccenter.org>: > > > Right now I'm going to have to abandon ZFS until it works with NFS. I >> don't want to get into a finger pointing game, I'd just like to help get >> this fixed, I have one old i386 server I can try things out on if that >> helps and it's already on 9 stable and ZFS v28. >> > > When you created the raid0, did you leave the disk cache enabled? I know > it's against the purpose of ZFS to leave the controller and drive caches > enabled, but it sure improves performance. > > In both our cases, (IIRC)NFS will also wait for that commit response - so > if the caches are disabled, NFS really begins to drag. I believe there was > a commit in 9.2 that allowed modification of a sysctl to disable/change the > NFS commit... in some manner.. I forget exactly.. they all tie in together. > > Also disable the cache flushing. > See https://wiki.freebsd.org/ZFSTuningGuide > And http://forums.freebsd.org/archive/index.php/t-30856.html > > > Rick > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > -- Eric Browning Systems Administrator 801-984-7623 Skaggs Catholic Center Juan Diego Catholic High School Saint John the Baptist Middle Saint John the Baptist Elementary
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