[PATCH v1 0/2] perf/aggregate: sort result by regression

[Christian Couder <christian.couder@xxxxxxxxx>]

This small patch series makes it easy to spot big performance
regressions, so that they can later be investigated.

For example:

$ ./aggregate.perl --sortbyregression --subsection "without libpcre" v2.14.3 v2.15.1 v2.16.2 p4220-log-grep-engines.sh 
+5.0% p4220-log-grep-engines.2 0.60(0.58+0.02) 0.63(0.59+0.04) v2.14.3 v2.15.1
+4.5% p4220-log-grep-engines.10 0.67(0.64+0.03) 0.70(0.67+0.02) v2.14.3 v2.15.1
+1.7% p4220-log-grep-engines.5 0.58(0.57+0.01) 0.59(0.59+0.00) v2.14.3 v2.15.1
+1.7% p4220-log-grep-engines.6 0.58(0.58+0.00) 0.59(0.56+0.02) v2.14.3 v2.15.1
+1.7% p4220-log-grep-engines.17 0.58(0.57+0.01) 0.59(0.56+0.02) v2.14.3 v2.15.1
+1.7% p4220-log-grep-engines.1 0.60(0.58+0.01) 0.61(0.60+0.01) v2.14.3 v2.15.1
+1.6% p4220-log-grep-engines.13 0.64(0.63+0.02) 0.65(0.63+0.01) v2.14.3 v2.15.1
+1.5% p4220-log-grep-engines.9 0.67(0.66+0.01) 0.68(0.67+0.01) v2.14.3 v2.15.1
+0.0% p4220-log-grep-engines.14 0.65(0.62+0.02) 0.65(0.63+0.02) v2.14.3 v2.15.1
+0.0% p4220-log-grep-engines.18 0.58(0.57+0.00) 0.58(0.56+0.02) v2.14.3 v2.15.1
-1.5% p4220-log-grep-engines.13 0.65(0.63+0.01) 0.64(0.62+0.01) v2.15.1 v2.16.2
-1.5% p4220-log-grep-engines.14 0.65(0.63+0.02) 0.64(0.60+0.03) v2.15.1 v2.16.2
-1.6% p4220-log-grep-engines.1 0.61(0.60+0.01) 0.60(0.58+0.02) v2.15.1 v2.16.2
-1.7% p4220-log-grep-engines.5 0.59(0.59+0.00) 0.58(0.55+0.02) v2.15.1 v2.16.2
-1.7% p4220-log-grep-engines.6 0.59(0.56+0.02) 0.58(0.55+0.02) v2.15.1 v2.16.2
-1.7% p4220-log-grep-engines.18 0.58(0.56+0.02) 0.57(0.55+0.02) v2.15.1 v2.16.2
-2.9% p4220-log-grep-engines.9 0.68(0.67+0.01) 0.66(0.64+0.02) v2.15.1 v2.16.2
-3.4% p4220-log-grep-engines.17 0.59(0.56+0.02) 0.57(0.55+0.01) v2.15.1 v2.16.2
-4.3% p4220-log-grep-engines.10 0.70(0.67+0.02) 0.67(0.66+0.01) v2.15.1 v2.16.2
-4.8% p4220-log-grep-engines.2 0.63(0.59+0.04) 0.60(0.57+0.03) v2.15.1 v2.16.2

Christian Couder (2):
  perf/aggregate: add display_dir()
  perf/aggregate: add --sortbyregression option

 t/perf/aggregate.perl | 59 +++++++++++++++++++++++++++++++++++++++----
 1 file changed, 54 insertions(+), 5 deletions(-)

-- 
2.17.0.rc0.37.g8f476fabe9