93ba78d6f4
This causes cgit to serve error pages, which is undesirable. This reverts commit5229c9b232, reversing changes made tof2b211131f.
73 lines
2.1 KiB
Bash
Executable file
73 lines
2.1 KiB
Bash
Executable file
#!/bin/sh
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# Read a line coming from `./aggregate.perl --sort-by regression ...`
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# and automatically bisect to find the commit responsible for the
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# performance regression.
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#
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# Lines from `./aggregate.perl --sort-by regression ...` look like:
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#
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# +100.0% p7821-grep-engines-fixed.1 0.04(0.10+0.03) 0.08(0.11+0.08) v2.14.3 v2.15.1
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# +33.3% p7820-grep-engines.1 0.03(0.08+0.02) 0.04(0.08+0.02) v2.14.3 v2.15.1
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#
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die () {
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echo >&2 "error: $*"
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exit 1
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}
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while [ $# -gt 0 ]; do
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arg="$1"
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case "$arg" in
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--help)
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echo "usage: $0 [--config file] [--subsection subsection]"
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exit 0
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;;
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--config)
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shift
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GIT_PERF_CONFIG_FILE=$(cd "$(dirname "$1")"; pwd)/$(basename "$1")
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export GIT_PERF_CONFIG_FILE
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shift ;;
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--subsection)
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shift
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GIT_PERF_SUBSECTION="$1"
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export GIT_PERF_SUBSECTION
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shift ;;
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--*)
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die "unrecognised option: '$arg'" ;;
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*)
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die "unknown argument '$arg'"
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;;
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esac
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done
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read -r regression subtest oldtime newtime oldrev newrev
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test_script=$(echo "$subtest" | sed -e 's/\(.*\)\.[0-9]*$/\1.sh/')
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test_number=$(echo "$subtest" | sed -e 's/.*\.\([0-9]*\)$/\1/')
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# oldtime and newtime are decimal number, not integers
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oldtime=$(echo "$oldtime" | sed -e 's/^\([0-9]\+\.[0-9]\+\).*$/\1/')
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newtime=$(echo "$newtime" | sed -e 's/^\([0-9]\+\.[0-9]\+\).*$/\1/')
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test $(echo "$newtime" "$oldtime" | awk '{ print ($1 > $2) }') = 1 ||
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die "New time '$newtime' shoud be greater than old time '$oldtime'"
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tmpdir=$(mktemp -d -t bisect_regression_XXXXXX) || die "Failed to create temp directory"
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echo "$oldtime" >"$tmpdir/oldtime" || die "Failed to write to '$tmpdir/oldtime'"
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echo "$newtime" >"$tmpdir/newtime" || die "Failed to write to '$tmpdir/newtime'"
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# Bisecting must be performed from the top level directory (even with --no-checkout)
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(
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toplevel_dir=$(git rev-parse --show-toplevel) || die "Failed to find top level directory"
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cd "$toplevel_dir" || die "Failed to cd into top level directory '$toplevel_dir'"
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git bisect start --no-checkout "$newrev" "$oldrev" || die "Failed to start bisecting"
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git bisect run t/perf/bisect_run_script "$test_script" "$test_number" "$tmpdir"
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res="$?"
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git bisect reset
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exit "$res"
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)
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