bench: microsecond timing via tools/timeit, toybox oracle, words to 10M lines

This commit is contained in:
2026-09-09 05:23:54 -04:00
parent 7b3a535173
commit 3cde946a68
7 changed files with 186 additions and 138 deletions
+8 -7
View File
@@ -1,9 +1,9 @@
#!/usr/bin/env bash
# bench.sh — race fastwc against GNU coreutils wc on line counts, file input.
# Busybox wc is raced too, for shits and giggles. Includes the monster
# cases: 100M lines raced against coreutils (busybox through 1.1 GB is a
# spectator sport, not a benchmark), and 1B lines timed solo (no
# reference to beat — there isn't one).
# Busybox and toybox wc are raced too, for shits and giggles. Includes
# the monster cases: 100M lines raced against coreutils (busybox/toybox
# through 1.1 GB is a spectator sport, not a benchmark), and 1B lines
# timed solo (no reference to beat — there isn't one).
# Fails fast: the moment fastwc is slower than (or disagrees with) an
# oracle wc, a human readable report is written to FAILED-benchmark.txt
# and this script exits non-zero.
@@ -23,7 +23,7 @@ for oracle in $ORACLES; do
printf 'benchmarking %s wc vs fastwc: lines, file input (%s interleaved runs each, minimum kept)\n' \
"$BENCH_NAME" "$BENCH_REPS"
printf '%-28s %10s %22s %8s %s\n' 'test' 'wc' 'fastwc (ms µs)' 'ratio' 'status'
printf '%-28s %16s %24s %8s %s\n' 'test' 'wc' 'fastwc (µs)' 'ratio' 'status'
printf '%s\n' '--- lines ---'
if ! run_cases lines -l 10000 100000 1000000 10000000; then
@@ -34,8 +34,9 @@ for oracle in $ORACLES; do
"$BENCH_NAME" "$BENCH_NAME"
done
# The monsters stay coreutils-only (busybox through 1.1 GB is a spectator
# sport, not a benchmark), so switch back from the last oracle raced.
# The monsters stay coreutils-only (busybox/toybox through 1.1 GB is a
# spectator sport, not a benchmark), so switch back from the last oracle
# raced.
select_oracle coreutils || exit 1
printf '%s\n' '--- monster: 100M lines vs coreutils ---'
if ! run_cases lines -l 100000000; then