On 11/07/2010 20:00, BCS wrote:
Hello div0,
The rule of thumb is don't bother spawning more threads than you have
cpus. You're just wasting resources mostly.
You REALLY don't want more threads trying to run than you have cores.
Threads in a wait state, are less of an issue, but they still use up
resources.
I think you're going a bit far there.
How many h/w threads does a core support?
1, 2, 4 or even 8 today (on power 7 machines).
And tomorrow?
You can only use basic rules of thumb with multi threading unless you
are going to spend time and effort profiling your application on a
specific machine or do some kind of run time profiling & configuration.
--
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk
