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The string-list API used a custom reallocation strategy that was very inefficient, instead of using the usual ALLOC_GROW() macro, which has been fixed. * jh/string-list-micro-optim: string-list: use ALLOC_GROW macro when reallocing string_list
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#!/bin/sh | ||
# | ||
# This test measures the performance of various read-tree | ||
# and status 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. | ||
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test_description="Tests performance of read-tree" | ||
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. ./perf-lib.sh | ||
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test_perf_default_repo | ||
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# 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. | ||
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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 config --local core.sparsecheckout 1 | ||
cat >.git/info/sparse-checkout <<-EOF | ||
/* | ||
!ballast/* | ||
EOF | ||
else | ||
echo Assuming non-synthetic repo... | ||
git branch br_base $(git rev-list HEAD | tail -n 1) | ||
git branch br_ballast HEAD | ||
fi && | ||
git checkout -q br_ballast && | ||
nr_files=$(git ls-files | wc -l) | ||
' | ||
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test_perf "read-tree status br_ballast ($nr_files)" ' | ||
git read-tree HEAD && | ||
git status | ||
' | ||
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test_done |