[CentOS] 3ware performance in CentOS

Florin Andrei florin at andrei.myip.org
Thu Jun 19 17:55:07 UTC 2008

Have a look at these pages:


I'm comparing the default 5.1 64bit kernel with the patched one posted 
in the bug report (kernel-2.6.18-53.1.21.el5.bz321111.x86_64) and I 
don't quite see any significant difference in write performance for this 

dd if=/dev/zero of=/logs/test bs=100M count=1000

(100GB of data, written in 100MB blocks)

It's a Supermicro server, the motherboard is (according to the stuff 
painted on the mobo itself) Super X7DBI+, Intel Xeon L5420 with 8 cores 
total, 3ware 9650SE using the driver from the manufacturer's site.
I tested 2 disks in a mirror RAID volume.


kernel		time	speed
======		====	=====
patched		75min	23M/s
original	51min	34M/s
patched		48min	36M/s
original	61min	28M/s

Florin Andrei


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