I have a system similar to yours:
2 x Quad Core AMD 2.0GHz
16GB x DDR2 667
14 x 3.5" Seagate 750GB
2 x Intel X25-E SLC SSD
2 x LSI 1068 PCI-E controllers
I use the X25-E's for the root pool as well as the log devices for my
data pool:
# zpool status
pool: ak2-pool0
state: ONLINE
scrub: scrub completed after 0h1m with 0 errors on Tue May 12 14:35:32
2009
config:
NAME STATE READ WRITE CKSUM
ak2-pool0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t1d0 ONLINE 0 0 0
c2t1d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t2d0 ONLINE 0 0 0
c2t2d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t3d0 ONLINE 0 0 0
c2t3d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t4d0 ONLINE 0 0 0
c2t4d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t5d0 ONLINE 0 0 0
c2t5d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t6d0 ONLINE 0 0 0
c2t6d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c1t7d0 ONLINE 0 0 0
c2t7d0 ONLINE 0 0 0
logs ONLINE 0 0 0
c1t0d0s7 ONLINE 0 0 0
c2t0d0s7 ONLINE 0 0 0
I've only used bonnie++ for some rough performance tests. Here is the
'quick test', with fsyncs after every write on a new, empty pool:
# bonnie++ -d /ak2-pool0/bonnie/test/ -u nobody -f -b
...
------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- -Seeks-
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
32G 339610 89 216544 61 715528 73 2733 12
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 1171 9 +++++ +++ 1182 8 1174 9 +++++ +++ 1185 8
ak2-zfs1,32G,,,339610,89,216544,61,,,715528,73,2732.9,12,16,1171,9,+++++,+++,1182,8,1174,9,+++++,+++,1185,8
Watching 'zpool iostat 1' averages during the tests:
Sequential write: ~4.5k IOP, ~580MB
Sequential read: ~5.5k IOP, ~700MB
Hope that helps,
--
Dave
[email protected] wrote:
So I've setup my test system. It's a dual quad core system with 2.33 ghz
procs and 8GB of RAM. I have 12 2.5" 146 SAS drives connected via a LSI
SAS expander and 1068 hba. For the boot drive, I'm using a 2.5" sata and
I also have a Intel SSD (32GB SLC) which I'm using for ZIL. Oh - i'm
running Express Community Edition snv_113.
Can anyone share some insight on how best to benchmark fs performance? I
usually use iometer, but I can't get dynamo to compile on this platform.
I see alot of people use iozone, but I don't really understand why some
of the performance numbers exceed the maximum throughput in theory for
12 SAS disks.
I've configured a single mirrored pool with no hot spares across all 12
disks
# zpool status
pool: datapool1
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
datapool1 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t8d0 ONLINE 0 0 0
c0t9d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t10d0 ONLINE 0 0 0
c0t11d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t12d0 ONLINE 0 0 0
c0t13d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t14d0 ONLINE 0 0 0
c0t15d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t16d0 ONLINE 0 0 0
c0t17d0 ONLINE 0 0 0
mirror ONLINE 0 0 0
c0t18d0 ONLINE 0 0 0
c0t19d0 ONLINE 0 0 0
logs ONLINE 0 0 0
c2t1d0 ONLINE 0 0 0
Thanks in advance!
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