Hyperthreading and Child Processes

[Dan Hollis]

On Mon, 5 Apr 2004, Jim Robinson wrote:
> I have a lot of these Mail Servers types (Dual Zeon's) and I treat each
> instance as a real CPU and quad the number of MS processes.  It works well
> and flies.  Of course that doesn't mean it's right to do so but it works for
> me in real world scenarios.  I hedge my config a little and go with 15
> processes on a Dual Zeon (2+2 virtual) mostly because I was unsure as well.
> I see no issues at all after 12 months of usage.  Servers handle between
> 1K -  100K a day each.  They fly and are faster when I up the instances to
> match the virtaul CPU count.

Have you benchmarked vs non-ht mode and made sure that ht doesn't slow you
down? it is not always intuitive the situations where ht helps and where
it hurts.

-Dan