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p0004: use test_perf

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The perf test suite (more specifically: t/perf/aggregate.perl) requires
each test script to write test results into a file, otherwise it aborts
when aggregating.  Add actual performance tests with test_perf to allow
p0004 to be run together with other perf scripts.

Calibrate the value for the parameter --count based on the size of the
test repository, in order to get meaningful results with smaller repos
yet still be able to finish the script against huge ones without having
to wait for hours.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Acked-by: Jeff Hostetler <git@jeffhostetler.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2017-05-13 18:02:32 +02:00 committed by Junio C Hamano
parent e1ebb569c6
commit 48a6ace8f5
1 changed files with 36 additions and 0 deletions
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36
t/perf/p0004-lazy-init-name-hash.sh
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@ -18,4 +18,40 @@ test_expect_success 'multithreaded should be faster' '
test-lazy-init-name-hash --perf >out.perf
'
test_expect_success 'calibrate' '
entries=$(wc -l <out.single) &&
case $entries in
?) count=1000000 ;;
??) count=100000 ;;
???) count=10000 ;;
????) count=1000 ;;
?????) count=100 ;;
??????) count=10 ;;
*) count=1 ;;
esac &&
export count &&
case $entries in
1) entries_desc="1 entry" ;;
*) entries_desc="$entries entries" ;;
esac &&
case $count in
1) count_desc="1 round" ;;
*) count_desc="$count rounds" ;;
esac &&
desc="$entries_desc, $count_desc" &&
export desc
'
test_perf "single-threaded, $desc" "
test-lazy-init-name-hash --single --count=$count
"
test_perf "multi-threaded, $desc" "
test-lazy-init-name-hash --multi --count=$count
"
test_done