On Wednesday 13 August 2003 15:49, Bill Davidsen wrote:
On Mon, 28 Jul 2003, Andrew Theurer wrote:
Personally, I'd like to see all systems use NUMA sched, non NUMA systemsThat sounds like a great idea, but I'm not sure it could be realized short
being a single node (no policy difference from non-numa sched), allowing
us to remove all NUMA ifdefs. I think the code would be much more
readable.
of a major rewrite. Look how hard Ingo and Con are working just to get a
single node doing a good job with interactive and throughput tradeoffs.
Actually it's not too bad. Attached is a patch to do it. It also does multi-level node support and makes all the load balance routines runqueue-centric instead of cpu-centric, so adding something like shared runqueues (for HT) should be really easy. Hmm, other things: inter-node balance intervals are now arch specific (AMD is "1"). The default busy/idle balance timers of 200/1 are not arch specific, but I'm thinking they should be. And for non-numa, the scheduling policy is the same as it was with vanilla O(1).