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3db596113d
I've been using this since April and posted it on the mailing list, but it seems worth having in the repository. Not sure about the location. R=golang-dev, r, r CC=golang-dev https://golang.org/cl/5371100
67 lines
1.4 KiB
Bash
Executable File
67 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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# Copyright 2011 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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case "$1" in
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-*)
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echo 'usage: benchcmp old.txt new.txt' >&2
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echo >&2
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echo 'Each input file should be gotest -bench output.' >&2
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echo 'Benchcmp compares the first and last for each benchmark.' >&2
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exit 2
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esac
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awk '
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BEGIN {
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n = 0
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}
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$1 ~ /^Benchmark/ && $4 == "ns/op" {
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if(old[$1]) {
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if(!saw[$1]++) {
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name[n++] = $1
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if(length($1) > len)
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len = length($1)
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}
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new[$1] = $3
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if($6 == "MB/s")
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newmb[$1] = $5
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} else {
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old[$1] = $3
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if($6 = "MB/s")
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oldmb[$1] = $5
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}
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}
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END {
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if(n == 0) {
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print "benchcmp: no repeated benchmarks" >"/dev/stderr"
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exit 1
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}
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printf("%-*s %12s %12s %7s\n", len, "benchmark", "old ns/op", "new ns/op", "delta")
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# print ns/op
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for(i=0; i<n; i++) {
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what = name[i]
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printf("%-*s %12d %12d %6s%%\n", len, what, old[what], new[what],
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sprintf("%+.2f", 100*new[what]/old[what]-100))
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}
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# print mb/s
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anymb = 0
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for(i=0; i<n; i++) {
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what = name[i]
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if(!(what in newmb))
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continue
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if(anymb++ == 0)
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printf("\n%-*s %12s %12s %7s\n", len, "benchmark", "old MB/s", "new MB/s", "speedup")
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printf("%-*s %12s %12s %6sx\n", len, what,
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sprintf("%.2f", oldmb[what]),
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sprintf("%.2f", newmb[what]),
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sprintf("%.2f", newmb[what]/oldmb[what]))
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}
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}
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' "$@"
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