Irqbalance/irqbalance — pull request #2 by pkun (2013-10-17 19:46:13+00:00)
Title: Fix standard deviation formula

The standard deviation formula is sqrt(deviations / (N-1)) but
not sqrt(deviations/N - 1). I'm not sure but probably standard
deviation must be 0 when N==1. In any case we can't divide by
zero.

Signed-off-by: Serj Kalichev