On Thu, 31 Mar 2005 09:57:40 -0500, Calvin Ward <[EMAIL PROTECTED]> wrote:
> Just to be clear, are you saying it is better to have more simultaneous
> requests in that scenario, or less instances, or both?

Both. Although load testing real applications on real configurations
is really the only way to find out what is optimum.

My experiences with Solaris and the SPARC architecture would lead me
to suggest no more than one instance per 2 CPUs (not based on any
empirical evidence, but based on writing compilers for the Sun 4
chipset  back before it was called SPARC). I don't know enough about
Windows multi-threading and the Intel processor to make a
recommendation for that platform.

I would be surprised if one instance per processor (with 3-5
simultaneous requests each) turned out to be more efficient that one
instance per 2 processors (with 6-10 sim reqs per instance) - on any
processor architecture. Process switching is likely going to be more
costly than thread switching.
-- 
Sean A Corfield -- http://corfield.org/
Team Fusebox -- http://fusebox.org/
Got Gmail? -- I have 50, yes 50, invites to give away!

"If you're not annoying somebody, you're not really alive."
-- Margaret Atwood

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