[Novalug] iozone benchmarking
Megan Larko
larkoc@iges.org
Wed Jan 16 15:57:42 EST 2008
Megan Larko wrote:
Okay. I got iozone3_283.tar and installed it onto two systems:
1--larkobox Ubuntu Gutsy Gibbon 2--oss3 CentOS 5 final (8 CPUs)
cat /proc/cpuinfo
processor : 0 : 7
vendor_id : GenuineIntel : GenuineIntel
cpu family : 15 : 6
model : 1 ; 15
model name : Intel(R) Pentium(R) 4 CPU 1.80GHz
stepping : 2
: Intel(R) Xeon(R) CPU
E5345 @ 2.33GHz
: 7 (stepping)
cpu MHz : 1800.135 : 2327.564
cache size : 256 KB : 4096 KB
cat /proc/meminfo
MemTotal: 514316 kB : 16308556 kB
MemFree: 70336 kB : 15704804 kB
Buffers: 11672 kB : 169832 kB
Cached: 122980 kB : 235504 kB
SwapCached: 22760 kB : 44 kB
Active: 311024 kB : 248332 kB
Inactive: 41164 kB : 220560 kB
Very different boxes!
The larkobox has only one smallish disk:
larkoc@larkoc:~/CREW/benchmarks$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 6.9G 4.2G 2.4G 64% /
varrun 252M 96K 252M 1% /var/run
varlock 252M 0 252M 0% /var/lock
udev 252M 68K 252M 1% /dev
devshm 252M 0 252M 0% /dev/shm
lrm 252M 34M 218M 14%
/lib/modules/2.6.22-14-generic/volatile
/dev/sda1 96M 60M 31M 66% /boot
/dev/sda4 28G 14G 13G 53% /home
The oss3 box has many Hitachi 1Tb Ultrastar disks:
[larkoc@oss3 current]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 4.9G 3.3G 1.4G 70% /
tmpfs 7.8G 0 7.8G 0% /dev/shm
crew01:/home 1.4T 412G 894G 32% /home
/dev/sdc1 5.5T 187M 5.4T 1% /LSI1
/dev/sdd1 5.4T 187M 5.4T 1% /LSI2
/dev/mapper/oss3space-LV1
5.4T 191M 5.4T 1% /SCRATCH
I ran iozone on the command-line and seemed to get essentially the same
results for both systems. I'm not buying it.
larkobox OUTPUT:
Run began: Wed Jan 16 15:31:09 2008
Excel chart generation enabled
Auto Mode
Using maximum file size of 4 kilobytes.
Command line used: ./iozone -Ra -g 1Gb -i 0 -i 1
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random
random bkwd record stride
KB reclen write rewrite read reread read
write read rewrite read fwrite frewrite fread freread
iozone test complete.
Excel output is below:
"Writer report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
"0" 0
"Re-writer report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
"0" 0
"Reader report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
"0" 0
"Re-Reader report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
**********************************************************************
oss3 OUTPUT:
Run began: Wed Jan 16 15:53:49 2008
Excel chart generation enabled
Auto Mode
Using maximum file size of 24 kilobytes.
Command line used: ./iozone -Ra -g 24Gb -i 0 -i 1
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random
random bkwd record stride
KB reclen write rewrite read reread read
write read rewrite read fwrite frewrite fread freread
iozone test complete.
Excel output is below:
"Writer report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
"0" 0
"Re-writer report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
"0" 0
"Reader report"
"4" "8" "16" "32" "64" "128" "256" "512" "1024" "2048"
"4096" "8192" "16384"
"0" 0
What am I missing in the issuing of the iozone command?
TIA,
megan
> Hello,
>
> I would like to get some benchmarks on my filesystem on my work
> computer. It is a 16-slot JBOD with an LSI edge card. The drives in
> the 16 bays are all sATA Hitachi Ultrastar 1Tb units. I used parted to
> partition them. I used mke2fs -j -T largefile -m 1 for one group of
> drives passed to the CentOS 5 system. The other group of drives I did
> the same mke2fs but with out the -T largefile option. Using 8 drives
> each, the size formatted was 5.4Tb and 5.5Tb respectively. I am
> wondering about the performance of the set-up. How does this new LSI
> edge card compare with the internal Sil cards in the other boxes? Does
> the "largefile" option make any difference? I may even scrap the
> 5.4Tb ext3 and try the experimental ext4 or ZFS file system.
> I am leaning toward using bonnie for this to get some numbers to compare
> amongst file systems on the same disks (which will hopefully have some
> meaning).
>
> Is there a good bonnie HOWTO out there. My searches didn't come up with
> much in the way of usage of bonnie, only benchmark results done by
> others. What would be good arguments to supply to the test?
>
> Thanks group!
> megan
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