48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
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#!/bin/sh
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script="$1"
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test_number="$2"
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info_dir="$3"
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# This aborts the bisection immediately
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die () {
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echo >&2 "error: $*"
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exit 255
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}
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bisect_head=$(git rev-parse --verify BISECT_HEAD) || die "Failed to find BISECT_HEAD ref"
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script_number=$(echo "$script" | sed -e "s/^p\([0-9]*\).*\$/\1/") || die "Failed to get script number for '$script'"
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oldtime=$(cat "$info_dir/oldtime") || die "Failed to access '$info_dir/oldtime'"
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newtime=$(cat "$info_dir/newtime") || die "Failed to access '$info_dir/newtime'"
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cd t/perf || die "Failed to cd into 't/perf'"
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result_file="$info_dir/perf_${script_number}_${bisect_head}_results.txt"
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GIT_PERF_DIRS_OR_REVS="$bisect_head"
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export GIT_PERF_DIRS_OR_REVS
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./run "$script" >"$result_file" 2>&1 || die "Failed to run perf test '$script'"
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rtime=$(sed -n "s/^$script_number\.$test_number:.*\([0-9]\+\.[0-9]\+\)(.*).*\$/\1/p" "$result_file")
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echo "newtime: $newtime"
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echo "rtime: $rtime"
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echo "oldtime: $oldtime"
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# Compare ($newtime - $rtime) with ($rtime - $oldtime)
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# Times are decimal number, not integers
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if test $(echo "$newtime" "$rtime" "$oldtime" | awk '{ print ($1 - $2 > $2 - $3) }') = 1
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then
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# Current commit is considered "good/old"
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echo "$rtime" >"$info_dir/oldtime"
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exit 0
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else
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# Current commit is considered "bad/new"
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echo "$rtime" >"$info_dir/newtime"
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exit 1
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fi
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