perf test 70 takes a long time. One culprit is the output of command
perf annotate. Per default enabled are
- demangle symbol names
- interleave source code with assembly code.
Disable demangle of symbols and abort the annotation
after the first 250 lines.
This speeds up the test case considerable, for example
on s390:
Output before:
# time perf test 70
70: perf annotate basic tests : Ok
.....
real 2m7.467s
user 1m26.869s
sys 0m34.086s
#
Output after:
# time perf test 70
70: perf annotate basic tests : Ok
real 0m3.341s
user 0m1.606s
sys 0m0.362s
#
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Suggested-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/tests/shell/annotate.sh | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/perf/tests/shell/annotate.sh b/tools/perf/tests/shell/annotate.sh
index b072d9b97387..b28cd95b1d83 100755
--- a/tools/perf/tests/shell/annotate.sh
+++ b/tools/perf/tests/shell/annotate.sh
@@ -43,7 +43,7 @@ test_basic() {
fi
# Generate the annotated output file
- perf annotate -i "${perfdata}" --stdio 2> /dev/null > "${perfout}"
+ perf annotate --no-demangle -i "${perfdata}" --stdio 2> /dev/null | head -250 > "${perfout}"
# check if it has the target symbol
if ! grep "${testsym}" "${perfout}"
@@ -62,8 +62,8 @@ test_basic() {
fi
# check again with a target symbol name
- if ! perf annotate -i "${perfdata}" "${testsym}" 2> /dev/null | \
- grep -m 3 "${disasm_regex}"
+ if ! perf annotate --no-demangle -i "${perfdata}" "${testsym}" 2> /dev/null | \
+ head -250 | grep -m 3 "${disasm_regex}"
then
echo "Basic annotate [Failed: missing disasm output when specifying the target symbol]"
err=1
@@ -71,8 +71,8 @@ test_basic() {
fi
# check one more with external objdump tool (forced by --objdump option)
- if ! perf annotate -i "${perfdata}" --objdump=objdump 2> /dev/null | \
- grep -m 3 "${disasm_regex}"
+ if ! perf annotate --no-demangle -i "${perfdata}" --objdump=objdump 2> /dev/null | \
+ head -250 | grep -m 3 "${disasm_regex}"
then
echo "Basic annotate [Failed: missing disasm output from non default disassembler (using --objdump)]"
err=1
--
2.45.2