[lkml]   [2009]   [May]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 3/3] x86: fix node_possible_map logic -v2
> CPU [0-1] cannot be considered local in either node, since they are 
> further away from the memory than either, and furthermore, unlike either
> of the memory nodes, they have no preference for memory from either of
> the other two nodes (quite on the contrary; they would probably benefit
> from drawing from both.)

Surely you should schedule based on the memory bandwidth at that point ?
Assuming the data collection overhead is acceptable. A long time ago
someone did a paper on a related topic (Scheduling by memory bandwidth on
the grounds that memory not CPU bandwidth was the resource most
constrained) and that demonstrated that for quite a few processors the
memory bandwidth data is cheaply available in the profiling registers.


 \ /
  Last update: 2009-05-11 23:33    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean