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A small tool to do the statistics legwork on benchmarks etc.

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ministat

A small tool to do the statistics legwork on benchmarks etc.

Written by Poul-Henning Kamp, lured into a dark Linux alley and clubbed over the head and hauled away to Github by yours truly.

Build & Install

There should be no dependencies besides the standard libraries and a functional tool-chain.

$ cd ministat/
$ make
$ make PREFIX=/usr install
install -m 0755 ministat  /usr/bin/ministat

Usage

The FreeBSD man page is very relevant, pursue it here.

Usage: ministat [-C column] [-c confidence] [-d delimiter(s)] [-ns] [-w width] [file [file ...]]
	confidence = {80%, 90%, 95%, 98%, 99%, 99.5%}
	-C : column number to extract (starts and defaults to 1)
	-d : delimiter(s) string, default to " \t"
	-n : print summary statistics only, no graph/test
	-q : print summary statistics and test only, no graph
	-s : print avg/median/stddev bars on separate lines
	-w : width of graph/test output (default 74 or terminal width)

Example

From the FreeBSD man page

$ cat << EOF > iguana
50
200
150
400
750
400
150
EOF

$ cat << EOF > chameleon
150
400
720	
500
930
EOF

$ ministat -s -w 60 iguana chameleon
x iguana
+ chameleon
+------------------------------------------------------------+
|x      *  x	     *	       +	   + x	            +|
| |________M______A_______________|			     |
| 	      |________________M__A___________________|      |
+------------------------------------------------------------+
    N	  Min	     Max     Median	   Avg	     Stddev
x   7	   50	     750	200	   300	  238.04761
+   5	  150	     930	500	   540	  299.08193
No difference proven at 95.0% confidence

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