Re: [tlug] dedicating program to a particular core through the OS

[John Fremlin <john@example.com>]

Hi Gernot,

Gernot Hassenpflug wrote:

> 1) is the above useful (I am under the impression that multi-core is
> another way to say "SMP").

The communication delays are different as is often the degree of shared 
cache. It costs more to move a process to another SMP CPU than to 
another core on the same CPU.

> 2) if so, can this be done under linux as well? And if so, would it be
> useful or would it be better to let linux decide "load-sharing" by
> itself---I understand that tuning an SMP system is a full-time job!

If you understand the way your processes interact you can often improve 
the Linux scheduler's process<->core allocation.

sudo apt-get install schedtool

NAME
       schedtool - query and set CPU scheduling parameters

DESCRIPTION
       schedtool  can set all CPU scheduling parameters Linux is 
capable of or display information for given processes.