lkml.org 
[lkml]   [2009]   [May]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    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.

    Alan


    \
     
     \ /
      Last update: 2009-05-11 23:33    [W:2.487 / U:2.768 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site