git: test - Flesh out randread statistics reporting
Matthew Dillon
dillon at crater.dragonflybsd.org
Mon Mar 20 18:33:46 PDT 2017
commit 9022bcc8c0e94b834076723970831961f8b9a6fd
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Mon Mar 20 18:27:34 2017 -0700
test - Flesh out randread statistics reporting
* Cleanup the output. Report the aggregate IOPS, average latency,
aggregate bandwidth, low and high latencies, and the standard
deviation for the test on a per-second basis.
* Standard deviation notes:
68% Of the samples are within 1 standard deviation, so if the
reported stddev is 7uS, then 68% of the samples are +/- 7uS
of the average reported value.
95.45% Of the samples are within 2 standard deviations. +/- 14uS
in the example.
99.73% Of the samples are within 3 standard deviations. +/- 21uS
in the example.
Summary of changes:
test/sysperf/randread.c | 131 ++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 115 insertions(+), 16 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/9022bcc8c0e94b834076723970831961f8b9a6fd
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