Anjan,
> As far as disk I/O is concerned for flushing the buffers out, I am not
> ruling out the combination of Dell PERC4 RAID card, and the RH AS 3.0
> Update3 being a problem.
You know that Update4 is out, yes?
Update3 is currenly throttling your I/O by about 50%.
--
--Josh
Josh Berkus
Aglio Database Solutions
San Francisco