🚀 go-pugleaf

Totally Lost <idletime@my-dejanews.com> writes:

> Linux is not well multi-threaded, and has a pretty large foot print
> with very little locality in either the OS or it's primary applications.
> I would expect that for many users, dual Celeron's may have a negative
> performance impact much of the time.
> 
> To observe that Dual Celron's produce an observed improvement under
> certain lightly loading applications may be true. To assert that
> they scale under modest to heavy work loads is probably a huge mistake.
> To expect that they will scale well under Linux with heavy loads is
> almost certainly folly.

this depends on the type of loads.  i do number crunching and have a
quad ppro-200 (512k cache) machine.  the jobs are trivially
parallelizable (i need to run many to build up stats, i can run
multiple copies of the same job with differing random number seeds)
and involve little or no disk activity.  the quad box really does give
four times the performance of my older single ppro-200 (256k cache).
with four jobs active i have 399% user cpu loading.  since i am never
in the kernel for much, i didn't seem much improvement going from
2.0.x to 2.2.x (once the shopping deadlock problem in 2.0.34 and lower
got fixed - 2.0.34 and below could only handle two cpus).

-- 
johan kullstam