Date: Mon, 17 Sep 2012 18:19:18 +0100 From: Mike Clarke <jmc-freebsd2@milibyte.co.uk> To: freebsd-questions@freebsd.org Cc: Jamie Paul Griffin <jamie@kode5.net> Subject: Re: Questions about ZFS Tuning Message-ID: <201209171819.18049.jmc-freebsd2@milibyte.co.uk> In-Reply-To: <20120917122014.GC25763@kontrol.kode5.net> References: <20120917103632.GA25763@kontrol.kode5.net> <50570895.4030709@gmail.com> <20120917122014.GC25763@kontrol.kode5.net>
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On Monday 17 September 2012 13:20:14 Jamie Paul Griffin wrote: > I set zfs.zfs.prefetch_disable=0 because some dmesg line suggested/implied > it would benefit. I don't recall the exact output now. If you look in /var/run/dmesg.boot you should find the message saying "ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present; to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf." Since you have 2GB RAM then it's best to leave things as they are with prefetch disabled. -- Mike Clarke
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