jm + control-z   1

testing latency measurements using CTRL-Z
An excellent tip from Gil "HDRHistogram" Tene:
Good example of why I always "calibrate" latency tools with ^Z tests. If ^Z results don't make sense, don't use [the] tool. ^Z test math examples: If you ^Z for half the time, Max is obvious. [90th percentile] should be 80% of the ^Z stall time.
control-z  suspend  unix  testing  latencies  latency  measurement  percentiles  tips 
november 2014 by jm

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