On Sat, 8 Jan 2011, Dan Langille 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.
iozone is interesting. I bought the excel plugin from the developer to
generate the nice 3D graphs. I'd love to put some of my graphs up
somewhere for comparison... It's a very time-consuming test though.
Charles
--
Dan Langille - http://langille.org/
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