> Date: Mon, 19 Jun 2000 07:36:34 -0700
> From: CH <[EMAIL PROTECTED]>
>
> Has anyone experienced benchmarking Dual PIII and Single PIII? I have
> been thinking if I have two PIII 533mhz on one motherboard, two
> processors adds up to 1.66ghz. But what is the actual performance
> rating in comparison to single processor system running Linux? I plan
> in the near future to purchase dual processor and motherboard since
> Linux supports it.
>
> CH
I'd take some time to learn about the issues before investing the
money. If you're just running one computationally intensive
application at a time, the other CPU isn't going to benefit you unless
that application is written to take advantage of two CPUs (and most
likely it isn't). Now, if you are running more than one application
at the same time, it may be beneficial if you have enough memory.
Certainly, don't expect 2 times the performance because they're
sharing the same memory subsystem, I/O subsytem, etc. Around 1.5
times the performance is probably realistic IF your application is
compute intensive (vs. disk intensive, etc.) and can take advantage of
two processors or you're running multiple applications at the same
time.
The main point is one application is not going to run twice as fast
just becuase you have two processors unless that application was
designed for a multiprocessor system and even then, it's going to run
about 1.5-1.8 times faster (best case) because of the communication
overhead and sharing the other subsytems.
HTH,
Dave
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
