diff options
| -rwxr-xr-x | misc/benchcmp | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/misc/benchcmp b/misc/benchcmp index 015e7d2b2..b98ee2b2f 100755 --- a/misc/benchcmp +++ b/misc/benchcmp @@ -7,8 +7,13 @@ case "$1" in -*) echo 'usage: benchcmp old.txt new.txt' >&2 echo >&2 - echo 'Each input file should be go test -test.run=NONE -test.bench=. > [old,new].txt' >&2 + echo 'Each input file should be from:' >&2 + echo ' go test -test.run=NONE -test.bench=. > [old,new].txt' >&2 + echo >&2 echo 'Benchcmp compares the first and last for each benchmark.' >&2 + echo >&2 + echo 'If -test.benchmem=true is added to the "go test" command' >&2 + echo 'benchcmp will also compare memory allocations.' >&2 exit 2 esac @@ -27,10 +32,21 @@ $1 ~ /Benchmark/ && $4 == "ns/op" { new[$1] = $3 if($6 == "MB/s") newmb[$1] = $5 + + # allocs/op might be at $8 or $10 depending on if + # SetBytes was used or not. + if($8 == "allocs/op") + newalloc[$1] = $7 + if($10 == "allocs/op") + newalloc[$1] = $9 } else { old[$1] = $3 - if($6 = "MB/s") + if($6 == "MB/s") oldmb[$1] = $5 + if($8 == "allocs/op") + oldalloc[$1] = $7 + if($10 == "allocs/op") + oldalloc[$1] = $9 } } @@ -62,5 +78,21 @@ END { sprintf("%.2f", newmb[what]), sprintf("%.2f", newmb[what]/oldmb[what])) } + + # print allocs + anyalloc = 0 + for(i=0; i<n; i++) { + what = name[i] + if(!(what in newalloc)) + continue + if(anyalloc++ == 0) + printf("\n%-*s %12s %12s %7s\n", len, "benchmark", "old allocs", "new allocs", "delta") + if(oldalloc[what] == 0) + delta="n/a" + else + delta=sprintf("%.2f", 100*newalloc[what]/oldalloc[what]-100) + printf("%-*s %12d %12d %6s%%\n", len, what, + oldalloc[what], newalloc[what], delta) + } } ' "$@" |