Date: Wed, 27 May 2009 16:17:22 -0500 From: Chris Dillon <cdillon@wolves.k12.mo.us> To: Kip Macy <kmacy@freebsd.org> Cc: freebsd-fs@freebsd.org Subject: Re: RFT: ZFS MFC Message-ID: <20090527161722.68971qn52gulblcy@www.wolves.k12.mo.us> In-Reply-To: <3c1674c90905262138p7b196bc7ga2febb4667778e22@mail.gmail.com> References: <3c1674c90905151628h183cb1c2t8941843f8a828d4f@mail.gmail.com> <4A1C1E15.3080300@free.de> <3c1674c90905262138p7b196bc7ga2febb4667778e22@mail.gmail.com>
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Quoting Kip Macy <kmacy@freebsd.org>: > Machines with less than 4GB, especially those with workloads with poor > locality, should have prefetch disabled. You should not need the > other tunables on amd64 (i386 is both a lower priority and a harder > problem). When reporting problems report them with the tunables > removed as well as whatever your existing tunables are. Is vfs.zfs.prefetch_disable something that could have its default setting based on how much installed RAM the system has? Thank you for ZFS v13 back-port, BTW, now I'm anxious for FreeNAS to pick it up so I can use it on my new file server at home! -- Chris Dillon - NetEng/SysAdm Reeds Spring R-IV School District Technology Department 175 Elementary Rd. Reeds Spring, MO 65737 Voice: 417-272-8266 Fax: 417-272-0015
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