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July 2005

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Subject:
OT: 3ware-9xxx on 64bit
From:
Sven Sternberger <[log in to unmask]>
Reply To:
Sven Sternberger <[log in to unmask]>
Date:
Thu, 14 Jul 2005 19:46:03 +0200
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text/plain (28 lines) 
Hello!

maybe slightly ot

I hardly try to get an 3w-9xxx 12 port sata raid on an tyan-2882 (dual
opteron 246, 4gb ram) to work well on an SL 4.

my problem is that i have a write-rate something about 20mb/s. I already
tried it with:

blockdev -satra 16384
3ware FW Update on 9.2.1
Kernel Update 2.6.12.2
numa off
complety other distribution ubuntu warty (64bit version)

I ran tiobench and bonnie++ on ext3 and xfs, but I always get only
20mb/sec. In iostat I can see that I have about 80-90% iowait.


I double checked that I switched on the wrtite cache.

Maybe somebody has an idea

regards!

sven

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