Re: Issue with Linux+Pentium SMP Context Switching

On Saturday 20 December 2003 00:00, Josh Berkus wrote:
> In discussions with Linux kernel hackers online, they blame the way that
> PostgreSQL uses shared memory.   Whether or not they are correct, the
> effect of the issue is to harm PostgreSQL's performance and make us look
> bad on one of the major "enterprise" systems of choice: the multi-processor
> Xeon system.

Two suggestions..

1. Patch linux kernel for HT aware scheduler.
2. Try running Xeons in HTdisabled modes.

See if that helps. I would say using 2.6 on it is recommended anyways.. If 
possible of course..
Shridhar