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perf stat: More advanced variance computation
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 4 Sep 2009 15:26:26 +0000 (17:26 +0200)
committerIngo Molnar <mingo@elte.hu>
Fri, 4 Sep 2009 15:38:15 +0000 (17:38 +0200)
Use the more advanced single pass variance algorithm outlined
on the wikipedia page. This is numerically more stable for
larger sample sets.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
tools/perf/builtin-stat.c patch | blob | history

diff --cc tools/perf/builtin-stat.c
Simple merge
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