mirror of
https://github.com/git/git
synced 2024-11-05 18:59:29 +00:00
350d870143
Created t/perf/repos/many-files.sh to generate large, but artificial repositories. Created t/perf/inflate-repo.sh to alter an EXISTING repo to have a set of large commits. This can be used to create a branch with 1M+ files in repositories like git.git or linux.git, but with more realistic content. It does this by making multiple copies of the entire worktree in a series of sub-directories. The branch name and ballast structure created by both scripts match, so either script can be used to generate very large test repositories for the following perf test. Created t/perf/p0006-read-tree-checkout.sh to measure performance on various read-tree, checkout, and update-index operations. This test can run using either normal repos or ones from the above scripts. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
67 lines
2 KiB
Bash
Executable file
67 lines
2 KiB
Bash
Executable file
#!/bin/sh
|
|
#
|
|
# This test measures the performance of various read-tree
|
|
# and checkout operations. It is primarily interested in
|
|
# the algorithmic costs of index operations and recursive
|
|
# tree traversal -- and NOT disk I/O on thousands of files.
|
|
|
|
test_description="Tests performance of read-tree"
|
|
|
|
. ./perf-lib.sh
|
|
|
|
test_perf_default_repo
|
|
|
|
# If the test repo was generated by ./repos/many-files.sh
|
|
# then we know something about the data shape and branches,
|
|
# so we can isolate testing to the ballast-related commits
|
|
# and setup sparse-checkout so we don't have to populate
|
|
# the ballast files and directories.
|
|
#
|
|
# Otherwise, we make some general assumptions about the
|
|
# repo and consider the entire history of the current
|
|
# branch to be the ballast.
|
|
|
|
test_expect_success "setup repo" '
|
|
if git rev-parse --verify refs/heads/p0006-ballast^{commit}
|
|
then
|
|
echo Assuming synthetic repo from many-files.sh
|
|
git branch br_base master
|
|
git branch br_ballast p0006-ballast^
|
|
git branch br_ballast_alias p0006-ballast^
|
|
git branch br_ballast_plus_1 p0006-ballast
|
|
git config --local core.sparsecheckout 1
|
|
cat >.git/info/sparse-checkout <<-EOF
|
|
/*
|
|
!ballast/*
|
|
EOF
|
|
else
|
|
echo Assuming non-synthetic repo...
|
|
git branch br_base $(git rev-list HEAD | tail -n 1)
|
|
git branch br_ballast HEAD^ || error "no ancestor commit from current head"
|
|
git branch br_ballast_alias HEAD^
|
|
git branch br_ballast_plus_1 HEAD
|
|
fi &&
|
|
git checkout -q br_ballast &&
|
|
nr_files=$(git ls-files | wc -l)
|
|
'
|
|
|
|
test_perf "read-tree br_base br_ballast ($nr_files)" '
|
|
git read-tree -m br_base br_ballast -n
|
|
'
|
|
|
|
test_perf "switch between br_base br_ballast ($nr_files)" '
|
|
git checkout -q br_base &&
|
|
git checkout -q br_ballast
|
|
'
|
|
|
|
test_perf "switch between br_ballast br_ballast_plus_1 ($nr_files)" '
|
|
git checkout -q br_ballast_plus_1 &&
|
|
git checkout -q br_ballast
|
|
'
|
|
|
|
test_perf "switch between aliases ($nr_files)" '
|
|
git checkout -q br_ballast_alias &&
|
|
git checkout -q br_ballast
|
|
'
|
|
|
|
test_done
|