Gregory S. Youngblood wrote:
From: Mark Kirkwood [mailto:markir@xxxxxxxxxxxxxxx]
Mark Wong wrote:
On Mon, Aug 4, 2008 at 10:56 PM, Gregory S. Youngblood
<greg@xxxxxxxxx> wrote:
I recently ran some tests on Ubuntu Hardy Server (Linux) comparing
JFS, XFS,
and ZFS+FUSE. It was all 32-bit and on old hardware, plus I only
used
bonnie++, so the numbers are really only useful for my hardware.
What parameters were used to create the XFS partition in these
tests? And,
what options were used to mount the file system? Was the kernel 32-
bit or
64-bit? Given what I've seen with some of the XFS options (like
lazy-count),
I am wondering about the options used in these tests.
The default (no arguments specified) parameters were used to create
the XFS partitions. Mount options specified are described in the
table. This was a 64-bit OS.
I think it is a good idea to match the raid stripe size and give some
indication of how many disks are in the array. E.g:
For a 4 disk system with 256K stripe size I used:
$ mkfs.xfs -d su=256k,sw=2 /dev/mdx
which performed about 2-3 times quicker than the default (I did try
sw=4
as well, but didn't notice any difference compared to sw=4).
[Greg says]
I thought that xfs picked up those details when using md and a soft-raid
configuration.
You are right, it does (I may be recalling performance from my other
machine that has a 3Ware card - this was a couple of years ago...)
Anyway, I'm thinking for the Hardware raid tests they may need to be
specified.
Cheers
Mark
