Date: Wed, 2 Mar 2011 10:28:50 +0000 From: Dr Josef Karthauser <joe@tao.org.uk> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS on a single disk? Message-ID: <27423168-85BE-41B1-8E14-94F01310EFE4@tao.org.uk> In-Reply-To: <20110302001650.GB49147@icarus.home.lan> References: <0E00DAFC-C39F-47DC-B9AF-16419C20997F@tao.org.uk> <615F1346-E830-42E2-B229-4181B8BC56BD@exonetric.com> <53FA69D2-2EF0-4CBF-985B-6E710F15FE02@tao.org.uk> <20110302001650.GB49147@icarus.home.lan>
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On 2 Mar 2011, at 00:16, Jeremy Chadwick wrote: > Do not disable the ZIL. I hate referring to the Solaris documentation > for FreeBSD, but it applies: >=20 > = http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Disab= ling_the_ZIL_.28Don.27t.29 >=20 > And you cannot disable the ARC, so just tune it appropriately (which > you'll need to do on FreeBSD anyway). In fact, by getting rid of the > ARC (as you proposed), you would suffer worse performance than if you > had it in use. I guess I should have been a bit clearer, I mean without any external = devices backing them. Seeing as this is to be running on a VPS/Xen at a = hosting environment I'm not able to add any additional devices. I'm not = memory starved however. Is it madness to use a memory disk? (The = instance in question will have 6gb of ram total to play with.). Joe
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