294bfc2441
Add performance tests for 'for-each-ref'. The tests exercise different combinations of filters/formats/options, as well as the overall performance of 'git for-each-ref | git cat-file --batch-check' to demonstrate the performance difference vs. 'git for-each-ref' with "%(*fieldname)" format specifiers. All tests are run against a repository with 40k loose refs - 10k commits, each having a unique: - branch - custom ref (refs/custom/special_*) - annotated tag pointing at the commit - annotated tag pointing at the other annotated tag (i.e., a nested tag) After those tests are finished, the refs are packed with 'pack-refs --all' and the same tests are rerun. Signed-off-by: Victoria Dye <vdye@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
88 lines
2.1 KiB
Bash
Executable File
88 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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test_description='performance of for-each-ref'
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. ./perf-lib.sh
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test_perf_fresh_repo
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ref_count_per_type=10000
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test_iteration_count=10
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test_expect_success "setup" '
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test_commit_bulk $(( 1 + $ref_count_per_type )) &&
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# Create refs
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test_seq $ref_count_per_type |
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sed "s,.*,update refs/heads/branch_& HEAD~&\nupdate refs/custom/special_& HEAD~&," |
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git update-ref --stdin &&
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# Create annotated tags
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for i in $(test_seq $ref_count_per_type)
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do
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# Base tags
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echo "tag tag_$i" &&
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echo "mark :$i" &&
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echo "from HEAD~$i" &&
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printf "tagger %s <%s> %s\n" \
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"$GIT_COMMITTER_NAME" \
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"$GIT_COMMITTER_EMAIL" \
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"$GIT_COMMITTER_DATE" &&
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echo "data <<EOF" &&
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echo "tag $i" &&
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echo "EOF" &&
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# Nested tags
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echo "tag nested_$i" &&
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echo "from :$i" &&
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printf "tagger %s <%s> %s\n" \
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"$GIT_COMMITTER_NAME" \
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"$GIT_COMMITTER_EMAIL" \
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"$GIT_COMMITTER_DATE" &&
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echo "data <<EOF" &&
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echo "nested tag $i" &&
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echo "EOF" || return 1
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done | git fast-import
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'
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test_for_each_ref () {
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title="for-each-ref"
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if test $# -gt 0; then
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title="$title ($1)"
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shift
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fi
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args="$@"
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test_perf "$title" "
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for i in \$(test_seq $test_iteration_count); do
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git for-each-ref $args >/dev/null
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done
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"
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}
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run_tests () {
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test_for_each_ref "$1"
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test_for_each_ref "$1, no sort" --no-sort
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test_for_each_ref "$1, --count=1" --count=1
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test_for_each_ref "$1, --count=1, no sort" --no-sort --count=1
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test_for_each_ref "$1, tags" refs/tags/
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test_for_each_ref "$1, tags, no sort" --no-sort refs/tags/
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test_for_each_ref "$1, tags, dereferenced" '--format="%(refname) %(objectname) %(*objectname)"' refs/tags/
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test_for_each_ref "$1, tags, dereferenced, no sort" --no-sort '--format="%(refname) %(objectname) %(*objectname)"' refs/tags/
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test_perf "for-each-ref ($1, tags) + cat-file --batch-check (dereferenced)" "
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for i in \$(test_seq $test_iteration_count); do
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git for-each-ref --format='%(objectname)^{} %(refname) %(objectname)' refs/tags/ | \
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git cat-file --batch-check='%(objectname) %(rest)' >/dev/null
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done
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"
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}
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run_tests "loose"
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test_expect_success 'pack refs' '
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git pack-refs --all
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'
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run_tests "packed"
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test_done
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