Date: Fri, 31 Oct 2008 14:55:09 +1000 From: Danny Carroll <fbsd@dannysplace.net> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: freebsd-fs@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Areca vs. ZFS performance testing. Message-ID: <490A8FAD.8060009@dannysplace.net> In-Reply-To: <20081031043412.GA22289@icarus.home.lan> References: <490A782F.9060406@dannysplace.net> <20081031033208.GA21220@icarus.home.lan> <490A849C.7030009@dannysplace.net> <20081031043412.GA22289@icarus.home.lan>
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Jeremy Chadwick wrote: > > I'd like to see the performance difference between these scenarios: > > - Memory cache enabled on Areca, write caching enabled on disks > - Memory cache enabled on Areca, write caching disabled on disks > - Memory cache disabled on Areca, write caching enabled on disks > - Memory cache disabled on Areca, write caching disabled on disks > > I don't know if the controller will let you disable use of memory cache, > but I'm hoping it does. I'm pretty sure it lets you disable disk > write caching in its BIOS or via the CLI utility. The manual suggests that the write cache can be disabled. Perhaps there is no read cache for this card. -D
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