mirror of
https://github.com/git/git.git
synced 2024-11-24 10:26:17 +08:00
Merge branch 'cc/perf-bisect'
Performance measuring framework in t/perf learned to help bisecting performance regressions. * cc/perf-bisect: t/perf: add scripts to bisect performance regressions perf/run: add --subsection option
This commit is contained in:
Junio C Hamano
commit
02645318f6
73
t/perf/bisect_regression
Executable file
73
t/perf/bisect_regression
Executable file
@ -0,0 +1,73 @@
|
||||
#!/bin/sh
|
||||
|
||||
# Read a line coming from `./aggregate.perl --sort-by regression ...`
|
||||
# and automatically bisect to find the commit responsible for the
|
||||
# performance regression.
|
||||
#
|
||||
# Lines from `./aggregate.perl --sort-by regression ...` look like:
|
||||
#
|
||||
# +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
|
||||
# +33.3% p7820-grep-engines.1 0.03(0.08+0.02) 0.04(0.08+0.02) v2.14.3 v2.15.1
|
||||
#
|
||||
|
||||
die () {
|
||||
echo >&2 "error: $*"
|
||||
exit 1
|
||||
}
|
||||
|
||||
while [ $# -gt 0 ]; do
|
||||
arg="$1"
|
||||
case "$arg" in
|
||||
--help)
|
||||
echo "usage: $0 [--config file] [--subsection subsection]"
|
||||
exit 0
|
||||
;;
|
||||
--config)
|
||||
shift
|
||||
GIT_PERF_CONFIG_FILE=$(cd "$(dirname "$1")"; pwd)/$(basename "$1")
|
||||
export GIT_PERF_CONFIG_FILE
|
||||
shift ;;
|
||||
--subsection)
|
||||
shift
|
||||
GIT_PERF_SUBSECTION="$1"
|
||||
export GIT_PERF_SUBSECTION
|
||||
shift ;;
|
||||
--*)
|
||||
die "unrecognised option: '$arg'" ;;
|
||||
*)
|
||||
die "unknown argument '$arg'"
|
||||
;;
|
||||
esac
|
||||
done
|
||||
|
||||
read -r regression subtest oldtime newtime oldrev newrev
|
||||
|
||||
test_script=$(echo "$subtest" | sed -e 's/\(.*\)\.[0-9]*$/\1.sh/')
|
||||
test_number=$(echo "$subtest" | sed -e 's/.*\.\([0-9]*\)$/\1/')
|
||||
|
||||
# oldtime and newtime are decimal number, not integers
|
||||
|
||||
oldtime=$(echo "$oldtime" | sed -e 's/^\([0-9]\+\.[0-9]\+\).*$/\1/')
|
||||
newtime=$(echo "$newtime" | sed -e 's/^\([0-9]\+\.[0-9]\+\).*$/\1/')
|
||||
|
||||
test $(echo "$newtime" "$oldtime" | awk '{ print ($1 > $2) }') = 1 ||
|
||||
die "New time '$newtime' shoud be greater than old time '$oldtime'"
|
||||
|
||||
tmpdir=$(mktemp -d -t bisect_regression_XXXXXX) || die "Failed to create temp directory"
|
||||
echo "$oldtime" >"$tmpdir/oldtime" || die "Failed to write to '$tmpdir/oldtime'"
|
||||
echo "$newtime" >"$tmpdir/newtime" || die "Failed to write to '$tmpdir/newtime'"
|
||||
|
||||
# Bisecting must be performed from the top level directory (even with --no-checkout)
|
||||
(
|
||||
toplevel_dir=$(git rev-parse --show-toplevel) || die "Failed to find top level directory"
|
||||
cd "$toplevel_dir" || die "Failed to cd into top level directory '$toplevel_dir'"
|
||||
|
||||
git bisect start --no-checkout "$newrev" "$oldrev" || die "Failed to start bisecting"
|
||||
|
||||
git bisect run t/perf/bisect_run_script "$test_script" "$test_number" "$tmpdir"
|
||||
res="$?"
|
||||
|
||||
git bisect reset
|
||||
|
||||
exit "$res"
|
||||
)
|
||||
47
t/perf/bisect_run_script
Executable file
47
t/perf/bisect_run_script
Executable file
@ -0,0 +1,47 @@
|
||||
#!/bin/sh
|
||||
|
||||
script="$1"
|
||||
test_number="$2"
|
||||
info_dir="$3"
|
||||
|
||||
# This aborts the bisection immediately
|
||||
die () {
|
||||
echo >&2 "error: $*"
|
||||
exit 255
|
||||
}
|
||||
|
||||
bisect_head=$(git rev-parse --verify BISECT_HEAD) || die "Failed to find BISECT_HEAD ref"
|
||||
|
||||
script_number=$(echo "$script" | sed -e "s/^p\([0-9]*\).*\$/\1/") || die "Failed to get script number for '$script'"
|
||||
|
||||
oldtime=$(cat "$info_dir/oldtime") || die "Failed to access '$info_dir/oldtime'"
|
||||
newtime=$(cat "$info_dir/newtime") || die "Failed to access '$info_dir/newtime'"
|
||||
|
||||
cd t/perf || die "Failed to cd into 't/perf'"
|
||||
|
||||
result_file="$info_dir/perf_${script_number}_${bisect_head}_results.txt"
|
||||
|
||||
GIT_PERF_DIRS_OR_REVS="$bisect_head"
|
||||
export GIT_PERF_DIRS_OR_REVS
|
||||
|
||||
./run "$script" >"$result_file" 2>&1 || die "Failed to run perf test '$script'"
|
||||
|
||||
rtime=$(sed -n "s/^$script_number\.$test_number:.*\([0-9]\+\.[0-9]\+\)(.*).*\$/\1/p" "$result_file")
|
||||
|
||||
echo "newtime: $newtime"
|
||||
echo "rtime: $rtime"
|
||||
echo "oldtime: $oldtime"
|
||||
|
||||
# Compare ($newtime - $rtime) with ($rtime - $oldtime)
|
||||
# Times are decimal number, not integers
|
||||
|
||||
if test $(echo "$newtime" "$rtime" "$oldtime" | awk '{ print ($1 - $2 > $2 - $3) }') = 1
|
||||
then
|
||||
# Current commit is considered "good/old"
|
||||
echo "$rtime" >"$info_dir/oldtime"
|
||||
exit 0
|
||||
else
|
||||
# Current commit is considered "bad/new"
|
||||
echo "$rtime" >"$info_dir/newtime"
|
||||
exit 1
|
||||
fi
|
||||
60
t/perf/run
60
t/perf/run
@ -1,22 +1,35 @@
|
||||
#!/bin/sh
|
||||
|
||||
case "$1" in
|
||||
--help)
|
||||
echo "usage: $0 [--config file] [other_git_tree...] [--] [test_scripts]"
|
||||
exit 0
|
||||
;;
|
||||
--config)
|
||||
shift
|
||||
GIT_PERF_CONFIG_FILE=$(cd "$(dirname "$1")"; pwd)/$(basename "$1")
|
||||
export GIT_PERF_CONFIG_FILE
|
||||
shift ;;
|
||||
esac
|
||||
|
||||
die () {
|
||||
echo >&2 "error: $*"
|
||||
exit 1
|
||||
}
|
||||
|
||||
while [ $# -gt 0 ]; do
|
||||
arg="$1"
|
||||
case "$arg" in
|
||||
--)
|
||||
break ;;
|
||||
--help)
|
||||
echo "usage: $0 [--config file] [--subsection subsec] [other_git_tree...] [--] [test_scripts]"
|
||||
exit 0 ;;
|
||||
--config)
|
||||
shift
|
||||
GIT_PERF_CONFIG_FILE=$(cd "$(dirname "$1")"; pwd)/$(basename "$1")
|
||||
export GIT_PERF_CONFIG_FILE
|
||||
shift ;;
|
||||
--subsection)
|
||||
shift
|
||||
GIT_PERF_SUBSECTION="$1"
|
||||
export GIT_PERF_SUBSECTION
|
||||
shift ;;
|
||||
--*)
|
||||
die "unrecognised option: '$arg'" ;;
|
||||
*)
|
||||
break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
run_one_dir () {
|
||||
if test $# -eq 0; then
|
||||
set -- p????-*.sh
|
||||
@ -172,9 +185,32 @@ get_subsections "perf" >test-results/run_subsections.names
|
||||
|
||||
if test $(wc -l <test-results/run_subsections.names) -eq 0
|
||||
then
|
||||
if test -n "$GIT_PERF_SUBSECTION"
|
||||
then
|
||||
if test -n "$GIT_PERF_CONFIG_FILE"
|
||||
then
|
||||
die "no subsections are defined in config file '$GIT_PERF_CONFIG_FILE'"
|
||||
else
|
||||
die "subsection '$GIT_PERF_SUBSECTION' defined without a config file"
|
||||
fi
|
||||
fi
|
||||
(
|
||||
run_subsection "$@"
|
||||
)
|
||||
elif test -n "$GIT_PERF_SUBSECTION"
|
||||
then
|
||||
egrep "^$GIT_PERF_SUBSECTION\$" test-results/run_subsections.names >/dev/null ||
|
||||
die "subsection '$GIT_PERF_SUBSECTION' not found in '$GIT_PERF_CONFIG_FILE'"
|
||||
|
||||
egrep "^$GIT_PERF_SUBSECTION\$" test-results/run_subsections.names | while read -r subsec
|
||||
do
|
||||
(
|
||||
GIT_PERF_SUBSECTION="$subsec"
|
||||
export GIT_PERF_SUBSECTION
|
||||
echo "======== Run for subsection '$GIT_PERF_SUBSECTION' ========"
|
||||
run_subsection "$@"
|
||||
)
|
||||
done
|
||||
else
|
||||
while read -r subsec
|
||||
do
|
||||
|
||||
Loading…
Reference in New Issue
Block a user