Poor SAN Performance

[ThomasHerzog]

Hello, We have some performance issues with the following setup:
Server:
DL380 G4
2GB RAM
qla2300 0000:06:01.0: QLogic Fibre Channel HBA Driver: 8.02.09.02.04.08-d QLogic QLA2340 Kernel 2.6.9-89.ELsmp
Intel(R) Xeon(TM) CPU 3.40GHz

SAN Storage:
NetApp

We've used iometer for benchmarking.
File size MB block size type # ios TZ 18 TZ 19
10 32 seq 1 48,0 48,4
10 32 seq 10 48,5 49,4
10000 32 seq 1 33,6 32,9
10000 32 seq 10 33,5 34,5
10000 32 seq 100 35,6 34,5
10000 32 ran 10 1,5 1,9
10000 32 ran 100 1,8 1,9
10000 4 seq 100 9,3 9,2
10000 4 ran 100 0,3 0,3


tia
Thomas Herzog

[mistersixt]

Kernel 2.6.9-89.ELsmp? Maybe it is better to contact the people from CentOS/Red Hat concerning this issue.

regards, mistersixt.

[ThomasHerzog]

Hi, this happens also to the debian with Linux debianperf 2.6.26-1-686 #1 SMP Sat Jan 10 18:29:31 UTC 2009 i686 GNU/Linux

/Thomas