High iowait

[email protected] Mon, 21 Aug 2006 21:31:50 -0500

Newsgroups	org.kernel.vger.linux-config,org.kernel.vger.linux-admin
Message-ID	<[email protected]>

I have a storage raid attached to my linux server running CentOS 4.3
kernel 2.6.9-39.0.2.ELsmp. My server goes into huge iowait when i try
to read/write lot of data to the storage device. How can i debug
whether the problem is with the storage device or some setting of the
operating system. Is there any known issue with this kernel? How can i
tune my system to reduce iowait time?

TIA