hi,
adding a way to configure switch data output
for size and time, like:
$ sudo perf record -e 'sched:*' --switch-output=10M -avg
callchain: type FP
switch-output with 10M size threshold
mmap size 528384B
[ perf record: dump data: Woken up 37 times ]
[ perf record: Dump perf.data.2017010309135512 ]
[ perf record: dump data: Woken up 39 times ]
[ perf record: Dump perf.data.2017010309135771 ]
[ perf record: dump data: Woken up 38 times ]
[ perf record: Dump perf.data.2017010309140005 ]
^C[ perf record: Woken up 16 times to write data ]
[ perf record: Dump perf.data.2017010309140111 ]
[ perf record: Captured and wrote 4.748 MB perf.data.<timestamp> ]
...
the default for switch-output option stays and does the SIGUSR2 output switch
v2 changes:
- some patches already accepted
- add warning for switched size lower than ring buffer wakeup size
- got Wang Nan's Tested-by, but did not include it
due to changes I made in v2
Also available in:
git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
perf/fixes
thanks,
jirka
Cc: Wang Nan <wangn...@huawei.com>
---
Jiri Olsa (6):
perf tools: Add unit_number__scnprint function
perf record: Add struct switch_output
perf record: Change switch-output option to take optional argument
perf record: Add switch-output size option argument
perf record: Add switch-output size warning
perf record: Add switch-output time option argument
tools/perf/Documentation/perf-record.txt | 14 +++++++--
tools/perf/builtin-record.c | 154
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------
tools/perf/tests/Build | 1 +
tools/perf/tests/builtin-test.c | 4 +++
tools/perf/tests/tests.h | 1 +
tools/perf/tests/unit_number__scnprint.c | 37 ++++++++++++++++++++++
tools/perf/util/evlist.c | 10 ++++--
tools/perf/util/evlist.h | 2 ++
tools/perf/util/util.c | 13 ++++++++
tools/perf/util/util.h | 1 +
10 files changed, 219 insertions(+), 18 deletions(-)
create mode 100644 tools/perf/tests/unit_number__scnprint.c
