Date: Sat, 8 Jan 2011 18:47:20 -0500 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: Dan Langille <dan@langille.org> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: ZFS - benchmark & tuning before and after doubling RAM Message-ID: <AANLkTi=HoNPnBxreD8-m_SPPJLqA9YTqAbH-5s0WcQ1y@mail.gmail.com> In-Reply-To: <4D28EFCB.3070308@langille.org> References: <4D28CB06.8030301@langille.org> <AANLkTiktTMV43L18Eg5Rdxc0Hw80pnePEkQGTuiv=2EZ@mail.gmail.com> <4D28EFCB.3070308@langille.org>
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On Sat, Jan 8, 2011 at 6:14 PM, Dan Langille <dan@langille.org> wrote: > On 1/8/2011 4:33 PM, Mehmet Erol Sanliturk wrote: > >> >> >> On Sat, Jan 8, 2011 at 3:37 PM, Dan Langille <dan@langille.org >> <mailto:dan@langille.org>> wrote: >> >> I've been running a ZFS array for about 10 months on a system with >> 4GB of RAM. I'm about to add another 4GB of RAM. >> >> I think this might be an opportune time to run some simple >> benchmarks and do some tuning. Getting more out of the system is >> not a priority for me. It does what I need now. However, I do see >> some merit in writing something up for others to see/follow/learn. >> >> The system is running FreeBSD 8.2-PRERELEASE #1: Tue Nov 30 22:07:59 >> EST 2010 on a 64 bit box. The ZFS array consists of 7x2TB commodity >> drives on two SiI3124 SATA controllers. The OS runs off a gmirror >> RAID-1. >> >> More details here: http://www.freebsddiary.org/zfs-benchmark.php >> >> First, up, I've done a simple bonnie++ benchmark before I add more >> RAM. I ran this on two different datasets; one with compression >> enabled, one without. >> >> If anyone has suggestions for various tests, option settings, etc, >> I'm happy to run them and include the results. We have lots of time >> to play with this. >> >> -- >> Dan Langille - http://langille.org/ >> >> >> >> >> I think , you know the following pages : >> >> http://hub.opensolaris.org/bin/view/Community+Group+zfs/zfstestsuite >> http://dlc.sun.com/osol/test/downloads/current/ >> http://hub.opensolaris.org/bin/view/Community+Group+testing/testsuites >> http://hub.opensolaris.org/bin/view/Community+Group+testing/zones >> >> Some of the links may disappear spontaneously because of restructuring >> of their respective sites . >> > > Looking briefly, them seen to be more aimed at regression testing than a > benchmark. They all seem to be the same thing (just different instances). > > Perhaps I am mistaken, but I will look closer. > > > -- > Dan Langille - http://langille.org/ > Please , you may assume that , you are testing whether a change in hardware is breaking anything or not , before starting benchmarks . After assuring that anything is not broken , your benchmarks results will be more reliable . The benchmarks may not test all or some required features . Thank you very much . Mehmet Erol Sanliturk
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