On 02/03/17 11:49, Oliver O'Halloran wrote: > In previous generations of Power processors each core had a private L2 > cache. The Power9 processor has a slightly different architecture where > the L2 cache is shared among pairs of cores rather than being completely > private. > > Making the scheduler aware of this cache sharing allows the scheduler to > make more intelligent migration decisions. When one core in the pair is > overloaded tasks can be migrated to its paired core to improve throughput > without cache-refilling penality typically associated with task > migration.
Could you please describe the changes to sched_domains w.r.t before and after for P9. I think most of the changes make sense, but some data to back them up including any results you have to show that these patches help would be nice Balbir Singh.
