Date: Fri, 1 Jun 2012 18:17:38 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Oscar Hodgson <oscar.hodgson@gmail.com> Cc: Albert Shih <Albert.Shih@obspm.fr>, freebsd-questions@freebsd.org Subject: Re: Anyone using freebsd ZFS for large storage servers? Message-ID: <alpine.BSF.2.00.1206011812120.4297@wojtek.tensor.gdynia.pl> In-Reply-To: <CACxnZKM=5QXu29qmEd3FWmpQMeM7MuOPN7a_VwrM=Q_M-4uMUg@mail.gmail.com> References: <CACxnZKM__Lt9LMabyUC_HOCg2zsMT=3bpqwVrGj16py1A=qffg@mail.gmail.com> <20120601052309.GA32942@pcjas.obspm.fr> <CACxnZKM=5QXu29qmEd3FWmpQMeM7MuOPN7a_VwrM=Q_M-4uMUg@mail.gmail.com>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --2456600518-337710135-1338567437=:4297 Content-Type: TEXT/PLAIN; CHARSET=ISO-8859-15; format=flowed Content-Transfer-Encoding: 8BIT Content-ID: <alpine.BSF.2.00.1206011817271.4486@wojtek.tensor.gdynia.pl> > On Fri, Jun 1, 2012 at 1:23 AM, Albert Shih <Albert.Shih@obspm.fr> wrote: >> I've Dell R610 + 48 Go Ram, 2x 6 core + 4 * MD1200 (36*3T + 12*2T) >> >> [root@filer ~]# zpool list >> NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT >> filer 119T 35,4T 83,9T 29% 1.00x ONLINE - >> [root@filer ~]# >> >> Work very fine (I can't say I've long experience because the server is up >> since just 4 months). >> >> The ZFS is very good, easy to manage, very fast. i dare not to agree about "very fast". very fast is relative term. how did you configured your storage? trivial test: make 10 100GB files (so none fits in RAM) by for x in 0 1 2 3 4 5 6 7 8 9;do ( dd if=/dev/zero of=testfile$x bs=1m count=100k &) ;done measure time needed for it to finish (all dd processes exist) then install /usr/ports/benchmark/randomio and do some tests of random reads on that files. and final test - 10 randomio in parallel with 10 threads each, one per every file. then sum up results (IOPS) and divide by amount of disks you have. then decide if is it fast or slow :) >> They're two default IMHO : >> >> Eat lot of Ram can be controlled by settings in loader.conf. --2456600518-337710135-1338567437=:4297--
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