Date: Thu, 27 Mar 2014 11:40:18 +0100 From: Rainer Duffner <rainer@ultra-secure.de> To: Joar Jegleim <joar.jegleim@gmail.com> Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: zfs l2arc warmup Message-ID: <20140327114018.6d50b666@suse3.ewadmin.local> In-Reply-To: <CAFfb-hpi20062%2BHCrSVhey1hVk9TAcOZAWgHSAP93RSov3sx4A@mail.gmail.com> References: <CAFfb-hpi20062%2BHCrSVhey1hVk9TAcOZAWgHSAP93RSov3sx4A@mail.gmail.com>
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Am Thu, 27 Mar 2014 08:50:06 +0100 schrieb Joar Jegleim <joar.jegleim@gmail.com>: > Hi list ! > > I struggling to get a clear understanding of how the l2arc get warm > ( zfs). It's a FreeBSD 9.2-RELEASE server. > > The thing is with this particular pool is that it serves somewhere > between 20 -> 30 million jpegs for a website. The front page of the > site will for every reload present a mosaic of about 36 jpegs, and the > jpegs are completely randomly fetched from the pool. > I don't know what jpegs will be fetched at any given time, so I'm > installing about 2TB of l2arc ( the pool is about 1.6TB today) and I > want the whole pool to be available from the l2arc . > > > Any input on my 'rsync solution' to warmup the l2arc is much > appreciated :) > > Don't you need RAM for the L2ARC, too? http://www.richardelling.com/Home/scripts-and-programs-1/l2arc I'd just max-out the RAM on the DL370 - you'd need to do that anyway, according to the above spread-sheet....
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