diff options
Diffstat (limited to 't/perf')
| -rw-r--r-- | t/perf/README | 12 | ||||
| -rwxr-xr-x | t/perf/p3400-rebase.sh | 36 | ||||
| -rwxr-xr-x | t/perf/p4211-line-log.sh | 6 | ||||
| -rwxr-xr-x | t/perf/p5303-many-packs.sh | 87 | ||||
| -rw-r--r-- | t/perf/perf-lib.sh | 5 | ||||
| -rwxr-xr-x | t/perf/run | 8 |
6 files changed, 147 insertions, 7 deletions
diff --git a/t/perf/README b/t/perf/README index 8848c14619..49ea4349be 100644 --- a/t/perf/README +++ b/t/perf/README @@ -115,8 +115,16 @@ After that you will want to use some of the following: At least one of the first two is required! -You can use test_expect_success as usual. For actual performance -tests, use +You can use test_expect_success as usual. In both test_expect_success +and in test_perf, running "git" points to the version that is being +perf-tested. The $MODERN_GIT variable points to the git wrapper for the +currently checked-out version (i.e., the one that matches the t/perf +scripts you are running). This is useful if your setup uses commands +that only work with newer versions of git than what you might want to +test (but obviously your new commands must still create a state that can +be used by the older version of git you are testing). + +For actual performance tests, use test_perf 'descriptive string' ' command1 && diff --git a/t/perf/p3400-rebase.sh b/t/perf/p3400-rebase.sh new file mode 100755 index 0000000000..b3e7d525d2 --- /dev/null +++ b/t/perf/p3400-rebase.sh @@ -0,0 +1,36 @@ +#!/bin/sh + +test_description='Tests rebase performance' +. ./perf-lib.sh + +test_perf_default_repo + +test_expect_success 'setup' ' + git checkout -f -b base && + git checkout -b to-rebase && + git checkout -b upstream && + for i in $(seq 100) + do + # simulate huge diffs + echo change$i >unrelated-file$i && + seq 1000 >>unrelated-file$i && + git add unrelated-file$i && + test_tick && + git commit -m commit$i unrelated-file$i && + echo change$i >unrelated-file$i && + seq 1000 | tac >>unrelated-file$i && + git add unrelated-file$i && + test_tick && + git commit -m commit$i-reverse unrelated-file$i || + break + done && + git checkout to-rebase && + test_commit our-patch interesting-file +' + +test_perf 'rebase on top of a lot of unrelated changes' ' + git rebase --onto upstream HEAD^ && + git rebase --onto base HEAD^ +' + +test_done diff --git a/t/perf/p4211-line-log.sh b/t/perf/p4211-line-log.sh index 3d074b0e41..b7ff68d4fa 100755 --- a/t/perf/p4211-line-log.sh +++ b/t/perf/p4211-line-log.sh @@ -23,11 +23,11 @@ test_perf 'git log --follow (baseline for -M)' ' git log --oneline --follow -- "$file" >/dev/null ' -test_perf 'git log -L' ' - git log -L 1:"$file" >/dev/null +test_perf 'git log -L (renames off)' ' + git log --no-renames -L 1:"$file" >/dev/null ' -test_perf 'git log -M -L' ' +test_perf 'git log -L (renames on)' ' git log -M -L 1:"$file" >/dev/null ' diff --git a/t/perf/p5303-many-packs.sh b/t/perf/p5303-many-packs.sh new file mode 100755 index 0000000000..3779851941 --- /dev/null +++ b/t/perf/p5303-many-packs.sh @@ -0,0 +1,87 @@ +#!/bin/sh + +test_description='performance with large numbers of packs' +. ./perf-lib.sh + +test_perf_large_repo + +# A real many-pack situation would probably come from having a lot of pushes +# over time. We don't know how big each push would be, but we can fake it by +# just walking the first-parent chain and having every 5 commits be their own +# "push". This isn't _entirely_ accurate, as real pushes would have some +# duplicate objects due to thin-pack fixing, but it's a reasonable +# approximation. +# +# And then all of the rest of the objects can go in a single packfile that +# represents the state before any of those pushes (actually, we'll generate +# that first because in such a setup it would be the oldest pack, and we sort +# the packs by reverse mtime inside git). +repack_into_n () { + rm -rf staging && + mkdir staging && + + git rev-list --first-parent HEAD | + sed -n '1~5p' | + head -n "$1" | + perl -e 'print reverse <>' \ + >pushes + + # create base packfile + head -n 1 pushes | + git pack-objects --delta-base-offset --revs staging/pack + + # and then incrementals between each pair of commits + last= && + while read rev + do + if test -n "$last"; then + { + echo "$rev" && + echo "^$last" + } | + git pack-objects --delta-base-offset --revs \ + staging/pack || return 1 + fi + last=$rev + done <pushes && + + # and install the whole thing + rm -f .git/objects/pack/* && + mv staging/* .git/objects/pack/ +} + +# Pretend we just have a single branch and no reflogs, and that everything is +# in objects/pack; that makes our fake pack-building via repack_into_n() +# much simpler. +test_expect_success 'simplify reachability' ' + tip=$(git rev-parse --verify HEAD) && + git for-each-ref --format="option no-deref%0adelete %(refname)" | + git update-ref --stdin && + rm -rf .git/logs && + git update-ref refs/heads/master $tip && + git symbolic-ref HEAD refs/heads/master && + git repack -ad +' + +for nr_packs in 1 50 1000 +do + test_expect_success "create $nr_packs-pack scenario" ' + repack_into_n $nr_packs + ' + + test_perf "rev-list ($nr_packs)" ' + git rev-list --objects --all >/dev/null + ' + + # This simulates the interesting part of the repack, which is the + # actual pack generation, without smudging the on-disk setup + # between trials. + test_perf "repack ($nr_packs)" ' + git pack-objects --keep-true-parents \ + --honor-pack-keep --non-empty --all \ + --reflog --indexed-objects --delta-base-offset \ + --stdout </dev/null >/dev/null + ' +done + +test_done diff --git a/t/perf/perf-lib.sh b/t/perf/perf-lib.sh index 773f955d4a..46f08ee087 100644 --- a/t/perf/perf-lib.sh +++ b/t/perf/perf-lib.sh @@ -52,6 +52,9 @@ TEST_NO_MALLOC_CHECK=t # need to export them for test_perf subshells export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP +MODERN_GIT=$GIT_BUILD_DIR/bin-wrappers/git +export MODERN_GIT + perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results mkdir -p "$perf_results_dir" rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests @@ -81,7 +84,7 @@ test_perf_create_repo_from () { repo="$1" source="$2" source_git="$(git -C "$source" rev-parse --git-dir)" - objects_dir="$(git -C "$source" rev-parse --git-path objects)" + objects_dir="$("$MODERN_GIT" -C "$source" rev-parse --git-path objects)" mkdir -p "$repo/.git" ( cd "$source" && diff --git a/t/perf/run b/t/perf/run index cfd70129bb..e8adedadfd 100755 --- a/t/perf/run +++ b/t/perf/run @@ -30,7 +30,13 @@ unpack_git_rev () { } build_git_rev () { rev=$1 - cp ../../config.mak build/$rev/config.mak + for config in config.mak config.mak.autogen config.status + do + if test -e "../../$config" + then + cp "../../$config" "build/$rev/" + fi + done (cd build/$rev && make $GIT_PERF_MAKE_OPTS) || die "failed to build revision '$mydir'" } |