processor affinity on-node techniques

Greetings,

 

I am wondering if there has been any thought in the OpenMosix community
about techniques of processor affinity for on-node tasks.  It is very
easy to set migration techniques per node, but can this be done per
processor?

 

Specifically, now that dual-cores are out and quad-core is on the way
migrating processes between cores on-node becomes very important due to
the memory affinity and latency.  

 

For example, if you have a quad socket dual core machine and are running
4 processes on this machine the kernel scheduler may not place a single
process per socket, or while the processes are running they may migrate
around.  There are plenty of tools for the 2.6 kernel that aid in doing
these things, but not so much for 2.4.

 

Does anyone have experience with the OM kernel using dual socket dual
core?  Would OM naturally place the processes in the best arrangement,
and are there facilities to make them 'stick' to a processor and not
migrate within a node?

 

-Evan T.


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