[TriLUG] linux, processors, threads...and more

[Jason Tower]

the p4 design is terrible - you can't compare cpus of different 
architectures by clock speed alone.  a p3 1.4 ghz isn't that far behind a p4 
2.6 ghz in most real world situations, and a dual p3 1.4 would beat it 
easily if you have lots of threads.

jason

Christopher L Merrill wrote:
> Let's say I have an application that is fairly processor-intensive - which
> means when it is running, it's using at least 50-75% of the available CPU.
> It is also very thread intensive - running minimum of 500 threads, up to
> well over a thousand.  BTW, it's a Java program...and would be running on a
> current Linux kernel, such as RHES4.
> 
> I am curious if I should expect to get better performance from, for 
> instance:
> 1) a slower dual-processor machine, e.g. dual 1.4GHz PIII
> 2) a faster single-processor machine, e.g. 2.6GHz P4
> 
> I realize any answer would have about a zillion caveats, but is
> there any generally accepted wisdom along these lines?
> 
> TIA,
> C
> 
>