git/t/perf/p6300-for-each-ref.sh

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#!/bin/sh
test_description='performance of for-each-ref'
. ./perf-lib.sh
test_perf_fresh_repo
ref_count_per_type=10000
test_iteration_count=10
test_expect_success "setup" '
test_commit_bulk $(( 1 + $ref_count_per_type )) &&
# Create refs
test_seq $ref_count_per_type |
sed "s,.*,update refs/heads/branch_& HEAD~&\nupdate refs/custom/special_& HEAD~&," |
git update-ref --stdin &&
# Create annotated tags
for i in $(test_seq $ref_count_per_type)
do
# Base tags
echo "tag tag_$i" &&
echo "mark :$i" &&
echo "from HEAD~$i" &&
printf "tagger %s <%s> %s\n" \
"$GIT_COMMITTER_NAME" \
"$GIT_COMMITTER_EMAIL" \
"$GIT_COMMITTER_DATE" &&
echo "data <<EOF" &&
echo "tag $i" &&
echo "EOF" &&
# Nested tags
echo "tag nested_$i" &&
echo "from :$i" &&
printf "tagger %s <%s> %s\n" \
"$GIT_COMMITTER_NAME" \
"$GIT_COMMITTER_EMAIL" \
"$GIT_COMMITTER_DATE" &&
echo "data <<EOF" &&
echo "nested tag $i" &&
echo "EOF" || return 1
done | git fast-import
'
test_for_each_ref () {
title="for-each-ref"
if test $# -gt 0; then
title="$title ($1)"
shift
fi
args="$@"
test_perf "$title" "
for i in \$(test_seq $test_iteration_count); do
git for-each-ref $args >/dev/null
done
"
}
run_tests () {
test_for_each_ref "$1"
test_for_each_ref "$1, no sort" --no-sort
test_for_each_ref "$1, --count=1" --count=1
test_for_each_ref "$1, --count=1, no sort" --no-sort --count=1
test_for_each_ref "$1, tags" refs/tags/
test_for_each_ref "$1, tags, no sort" --no-sort refs/tags/
test_for_each_ref "$1, tags, dereferenced" '--format="%(refname) %(objectname) %(*objectname)"' refs/tags/
test_for_each_ref "$1, tags, dereferenced, no sort" --no-sort '--format="%(refname) %(objectname) %(*objectname)"' refs/tags/
test_perf "for-each-ref ($1, tags) + cat-file --batch-check (dereferenced)" "
for i in \$(test_seq $test_iteration_count); do
git for-each-ref --format='%(objectname)^{} %(refname) %(objectname)' refs/tags/ | \
git cat-file --batch-check='%(objectname) %(rest)' >/dev/null
done
"
}
run_tests "loose"
test_expect_success 'pack refs' '
git pack-refs --all
'
run_tests "packed"
test_done