Date: Wed, 30 Jan 2008 10:31:41 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Claus Guttesen <kometen@gmail.com> Cc: freebsd-performance@freebsd.org, Ivan Voras <ivoras@freebsd.org> Subject: Re: postgresql-performance using sysbench Message-ID: <47A043FD.9090607@FreeBSD.org> In-Reply-To: <b41c75520801290146g4e6e2c17oe2fc432245253ba7@mail.gmail.com> References: <b41c75520801280701x35e628dk90841b55cac77045@mail.gmail.com> <fnl35p$hnj$1@ger.gmane.org> <200801281024.11571.darcyb@commandprompt.com> <b41c75520801281221i5fbb32f3p1e2f3be40a8dfa74@mail.gmail.com> <479E3C5E.1070405@FreeBSD.org> <b41c75520801281246q16d305ecue915e66bea6ac5ab@mail.gmail.com> <fnmrri$pi4$1@ger.gmane.org> <b41c75520801290146g4e6e2c17oe2fc432245253ba7@mail.gmail.com>
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Claus Guttesen wrote: >>> I forgot to mention in my first post that I'm using ULE. The p800 >>> controller has a (factory set) 25/75 read/write cache ratio. >> There's maybe one additional thing: do you dual-boot Linux and FreeBSD? >> If so, you'll need to set up a separate additional partition for the >> database, instead of benchmarking it with the file systems used by the >> OS, because different areas of the drive(s) have different performance - >> you can verify this with diskinfo -t. > > I installed FreeBSD onto a boot-partition (p400i-controller) and used > the external storage (p800) as database-partition (eight 15K rpm > sas-disks in raid 1+0). Same with Ubuntu. When I re-installed FreeBSD > and ubuntu I wiped and formatted the previous partitions. Ubuntu used > ext3 which I guess is default fs. Write performance is something that we are working on, expect to hear about progress over the coming weeks/months. Kris
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