On Fri, Aug 21, 2020 at 01:54:51PM -0400, Jeff King wrote: > t/perf/p5302-pack-index.sh | 47 +++++++++++++++++++------------------- > 1 file changed, 24 insertions(+), 23 deletions(-) I meant to generate this diff with --patience, which is much more readable: diff --git a/t/perf/p5302-pack-index.sh b/t/perf/p5302-pack-index.sh index 23011ab739..228593d9ad 100755 --- a/t/perf/p5302-pack-index.sh +++ b/t/perf/p5302-pack-index.sh @@ -13,35 +13,36 @@ test_expect_success 'repack' ' export PACK ' +# Rather than counting up and doubling each time, count down from the endpoint, +# halving each time. That ensures that our final test uses as many threads as +# CPUs, even if it isn't a power of 2. +test_expect_success 'set up thread-counting tests' ' + t=$(test-tool online-cpus) && + threads= && + while test $t -gt 0 + do + threads="$t $threads" + t=$((t / 2)) + done +' + test_perf PERF_EXTRA 'index-pack 0 threads' ' rm -rf repo.git && git init --bare repo.git && GIT_DIR=repo.git git index-pack --threads=1 --stdin < $PACK ' -test_perf PERF_EXTRA 'index-pack 1 thread ' ' - rm -rf repo.git && - git init --bare repo.git && - GIT_DIR=repo.git GIT_FORCE_THREADS=1 git index-pack --threads=1 --stdin < $PACK -' - -test_perf PERF_EXTRA 'index-pack 2 threads' ' - rm -rf repo.git && - git init --bare repo.git && - GIT_DIR=repo.git git index-pack --threads=2 --stdin < $PACK -' - -test_perf PERF_EXTRA 'index-pack 4 threads' ' - rm -rf repo.git && - git init --bare repo.git && - GIT_DIR=repo.git git index-pack --threads=4 --stdin < $PACK -' - -test_perf PERF_EXTRA 'index-pack 8 threads' ' - rm -rf repo.git && - git init --bare repo.git && - GIT_DIR=repo.git git index-pack --threads=8 --stdin < $PACK -' +for t in $threads +do + THREADS=$t + export THREADS + test_perf PERF_EXTRA "index-pack $t threads" ' + rm -rf repo.git && + git init --bare repo.git && + GIT_DIR=repo.git GIT_FORCE_THREADS=1 \ + git index-pack --threads=$THREADS --stdin <$PACK + ' +done test_perf 'index-pack default number of threads' ' rm -rf repo.git && -- 2.28.0.694.g07780f7063
