huntedbytheirs
55aab093e7
Sub-millisecond runs showed as a flat 0ms, hiding real differences. The suite now times fastwc with a time_us helper, keeps the minimum reading in µs, derives ms from it, and prints both (fastwc: 0ms (767µs)). GNU wc stays at ms precision; solo case shows µs too.
41 lines
1.3 KiB
Bash
Executable File
41 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# bench.sh — race fastwc against GNU coreutils wc on standard input, fed by
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# shell redirect (the same path every real pipeline uses). Counts must agree
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# with coreutils' stdin behavior, and fastwc must not be slower.
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# Fails fast: the moment fastwc is slower than (or disagrees with) coreutils
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# wc, a human readable report is written to FAILED-benchmark.txt and this
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# script exits non-zero.
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#
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# usage: ./bench.sh
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set -u
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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REPO_DIR="$(cd "$SCRIPT_DIR/../../.." && pwd)"
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source "$REPO_DIR/benchmarks/std.sh"
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checkfastwc
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checkwc
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BENCH_NAME="coreutils"
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printf 'benchmarking %s wc vs fastwc: stdin (%s interleaved runs each, minimum kept)\n' \
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"$BENCH_NAME" "$BENCH_REPS"
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printf '%-28s %10s %22s %8s %s\n' 'test' 'wc' 'fastwc (ms µs)' 'ratio' 'status'
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printf '%s\n' '--- stdin lines ---'
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if ! run_stdin_cases lines -l 10000 100000 1000000 10000000; then
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exit 1
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fi
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printf '%s\n' '--- stdin words ---'
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if ! run_stdin_cases words -w 1000 100000 1000000; then
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exit 1
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fi
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printf '%s\n' '--- stdin lines+words+bytes ---'
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if ! run_stdin_cases lines -lwc 1000000; then
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exit 1
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fi
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printf '\nall %s stdin benchmarks passed — fastwc was never slower than %s wc\n' \
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"$BENCH_NAME" "$BENCH_NAME"
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