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authorMike Galbraith <efault@gmx.de>2009-03-10 19:08:11 +0100
committerIngo Molnar <mingo@elte.hu>2009-03-11 11:31:50 +0100
commitdf1c99d416500da8d26a4d78777467c53ee7689e (patch)
tree4f61ea769c43bfc985b760649d2c4ba5089ff608 /init/version.c
parent57310a98a354e84279d7c8af2f48805a62372e53 (diff)
sched: add avg_overlap decay
Impact: more precise avg_overlap metric - better load-balancing avg_overlap is used to measure the runtime overlap of the waker and wakee. However, when a process changes behaviour, eg a pipe becomes un-congested and we don't need to go to sleep after a wakeup for a while, the avg_overlap value grows stale. When running we use the avg runtime between preemption as a measure for avg_overlap since the amount of runtime can be correlated to cache footprint. The longer we run, the less likely we'll be wanting to be migrated to another CPU. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1236709131.25234.576.camel@laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init/version.c')
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