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authorÆvar Arnfjörð Bjarmason <avarab@gmail.com>2017-12-29 22:59:03 +0000
committerJunio C Hamano <gitster@pobox.com>2018-01-04 10:24:48 -0800
commit7b31b55db18f5348ee62ed283f115544bc1049ac (patch)
treea0b1fdfa79a94857a0277a90cf9350f6efd65516
parent1eaabe34fc6f486367a176207420378f587d3b48 (diff)
downloadgit-7b31b55db18f5348ee62ed283f115544bc1049ac.tar.gz
perf: amend the grep tests to test grep.threadsab/perf-grep-threads
Ever since 5b594f457a ("Threaded grep", 2010-01-25) the number of threads git-grep uses under PTHREADS has been hardcoded to 8, but there's no performance test to check whether this is an optimal setting. Amend the existing tests for the grep engines to support a mode where this can be tested, e.g.: GIT_PERF_GREP_THREADS='1 8 16' GIT_PERF_LARGE_REPO=~/g/linux ./run p782* Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rwxr-xr-xt/perf/p7820-grep-engines.sh52
-rwxr-xr-xt/perf/p7821-grep-engines-fixed.sh55
2 files changed, 86 insertions, 21 deletions
diff --git a/t/perf/p7820-grep-engines.sh b/t/perf/p7820-grep-engines.sh
index 62aba19e76..8b09c5bf32 100755
--- a/t/perf/p7820-grep-engines.sh
+++ b/t/perf/p7820-grep-engines.sh
@@ -12,6 +12,9 @@ e.g. GIT_PERF_7820_GREP_OPTS=' -i'. Some options to try:
-vi
-vw
-viw
+
+If GIT_PERF_GREP_THREADS is set to a list of threads (e.g. '1 4 8'
+etc.) we will test the patterns under those numbers of threads.
"
. ./perf-lib.sh
@@ -19,6 +22,11 @@ e.g. GIT_PERF_7820_GREP_OPTS=' -i'. Some options to try:
test_perf_large_repo
test_checkout_worktree
+if test -n "$GIT_PERF_GREP_THREADS"
+then
+ test_set_prereq PERF_GREP_ENGINES_THREADS
+fi
+
for pattern in \
'how.to' \
'^how to' \
@@ -39,18 +47,42 @@ do
else
prereq=""
fi
- test_perf $prereq "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern'" "
- git -c grep.patternType=$engine grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine' || :
- "
- done
-
- test_expect_success "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern'" '
- test_cmp out.basic out.extended &&
- if test_have_prereq PCRE
+ if ! test_have_prereq PERF_GREP_ENGINES_THREADS
then
- test_cmp out.basic out.perl
+ test_perf $prereq "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern'" "
+ git -c grep.patternType=$engine grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine' || :
+ "
+ else
+ for threads in $GIT_PERF_GREP_THREADS
+ do
+ test_perf PTHREADS,$prereq "$engine grep$GIT_PERF_7820_GREP_OPTS '$pattern' with $threads threads" "
+ git -c grep.patternType=$engine -c grep.threads=$threads grep$GIT_PERF_7820_GREP_OPTS -- '$pattern' >'out.$engine.$threads' || :
+ "
+ done
fi
- '
+ done
+
+ if ! test_have_prereq PERF_GREP_ENGINES_THREADS
+ then
+ test_expect_success "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern'" '
+ test_cmp out.basic out.extended &&
+ if test_have_prereq PCRE
+ then
+ test_cmp out.basic out.perl
+ fi
+ '
+ else
+ for threads in $GIT_PERF_GREP_THREADS
+ do
+ test_expect_success PTHREADS "assert that all engines found the same for$GIT_PERF_7820_GREP_OPTS '$pattern' under threading" "
+ test_cmp out.basic.$threads out.extended.$threads &&
+ if test_have_prereq PCRE
+ then
+ test_cmp out.basic.$threads out.perl.$threads
+ fi
+ "
+ done
+ fi
done
test_done
diff --git a/t/perf/p7821-grep-engines-fixed.sh b/t/perf/p7821-grep-engines-fixed.sh
index c7ef1e198f..61e41b82cf 100755
--- a/t/perf/p7821-grep-engines-fixed.sh
+++ b/t/perf/p7821-grep-engines-fixed.sh
@@ -6,6 +6,9 @@ Set GIT_PERF_7821_GREP_OPTS in the environment to pass options to
git-grep. Make sure to include a leading space,
e.g. GIT_PERF_7821_GREP_OPTS=' -w'. See p7820-grep-engines.sh for more
options to try.
+
+If GIT_PERF_7821_THREADS is set to a list of threads (e.g. '1 4 8'
+etc.) we will test the patterns under those numbers of threads.
"
. ./perf-lib.sh
@@ -13,6 +16,11 @@ options to try.
test_perf_large_repo
test_checkout_worktree
+if test -n "$GIT_PERF_GREP_THREADS"
+then
+ test_set_prereq PERF_GREP_ENGINES_THREADS
+fi
+
for pattern in 'int' 'uncommon' 'æ'
do
for engine in fixed basic extended perl
@@ -23,19 +31,44 @@ do
else
prereq=""
fi
- test_perf $prereq "$engine grep$GIT_PERF_7821_GREP_OPTS $pattern" "
- git -c grep.patternType=$engine grep$GIT_PERF_7821_GREP_OPTS $pattern >'out.$engine' || :
- "
- done
-
- test_expect_success "assert that all engines found the same for$GIT_PERF_7821_GREP_OPTS $pattern" '
- test_cmp out.fixed out.basic &&
- test_cmp out.fixed out.extended &&
- if test_have_prereq PCRE
+ if ! test_have_prereq PERF_GREP_ENGINES_THREADS
then
- test_cmp out.fixed out.perl
+ test_perf $prereq "$engine grep$GIT_PERF_7821_GREP_OPTS $pattern" "
+ git -c grep.patternType=$engine grep$GIT_PERF_7821_GREP_OPTS $pattern >'out.$engine' || :
+ "
+ else
+ for threads in $GIT_PERF_GREP_THREADS
+ do
+ test_perf PTHREADS,$prereq "$engine grep$GIT_PERF_7821_GREP_OPTS $pattern with $threads threads" "
+ git -c grep.patternType=$engine -c grep.threads=$threads grep$GIT_PERF_7821_GREP_OPTS $pattern >'out.$engine.$threads' || :
+ "
+ done
fi
- '
+ done
+
+ if ! test_have_prereq PERF_GREP_ENGINES_THREADS
+ then
+ test_expect_success "assert that all engines found the same for$GIT_PERF_7821_GREP_OPTS $pattern" '
+ test_cmp out.fixed out.basic &&
+ test_cmp out.fixed out.extended &&
+ if test_have_prereq PCRE
+ then
+ test_cmp out.fixed out.perl
+ fi
+ '
+ else
+ for threads in $GIT_PERF_GREP_THREADS
+ do
+ test_expect_success PTHREADS "assert that all engines found the same for$GIT_PERF_7821_GREP_OPTS $pattern under threading" "
+ test_cmp out.fixed.$threads out.basic.$threads &&
+ test_cmp out.fixed.$threads out.extended.$threads &&
+ if test_have_prereq PCRE
+ then
+ test_cmp out.fixed.$threads out.perl.$threads
+ fi
+ "
+ done
+ fi
done
test_done