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Date:      Mon, 28 Apr 2008 10:29:23 +0200
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-fs@freebsd.org
Subject:   Re: zfs and vfs.zfs.prefetch_disable="1"
Message-ID:  <fv41tg$ubl$1@ger.gmane.org>
In-Reply-To: <48142ABE.4050107@psg.com>
References:  <48142ABE.4050107@psg.com>

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--------------enig54E08CDECC35E8AB718D4E48
Randy Bush wrote: 

> i have in my incantations for zfs on i386 to stick the following in
> /boot/loader.conf.local
>=20
> vm.kmem_size=3D600M
> vm.kmem_size_max=3D600M
> zfs_load=3DYES
> vfs.zfs.prefetch_disable=3D1

Cannot say for sure but AFAIK it was mentioned during the Great ZFS
Flamewars as a possible way to reduce memory usage by ZFS, and also as a
possible way of avoiding some deadlocks (possibly py Pawel).


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