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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-09-04 17:03:13 +0200
committerIngo Molnar <mingo@elte.hu>2009-09-04 17:38:14 +0200
commit63d40deb2e7c64ed55943d49f078e09fc4b64b54 (patch)
treedf36ad086b762f87b6f53ff8750b62e25b2cce07 /include/linux/tc_act
parent9e9772c458d50dabdb5327821da3803254638cd1 (diff)
perf stat: Use stddev_mean in stead of stddev
When we're computing the mean by sampling the distribution, then the std dev of the mean is related to the std dev of the sample set by: stddev_mean = std_dev / sqrt(N) Which is exactly what we want. This results in the error on the mean decreasing with increasing number of samples. Also fix the scaled == -1, aka not counted case. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/tc_act')
0 files changed, 0 insertions, 0 deletions