On Wed, 22 Jul 2020 at 18:19, Greg Kroah-Hartman gregkh@linuxfoundation.org wrote:
Results from Linaro’s test farm. Regressions detected on arm and arm64 (Juno-r2) We are bisecting this problem and get back to you soon.
perf test cases failed perf: * Track-with-sched_switch * perf_record_test * perf_report_test
Bad case: [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.002 MB perf-lava-test.data ]
when it was pass it prints number of samples like below, Good case: [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.004 MB perf-lava-test.data (46 samples) ]
steps to reproduce: # perf record -e cycles -o perf-lava-test.data ls -a 2>&1 | tee perf-record.log
Link to full test: https://qa-reports.linaro.org/lkft/linux-stable-rc-5.7-oe/build/v5.7.9-244-g...
test case: https://github.com/Linaro/test-definitions/blob/master/automated/linux/perf/...
Any hint by bisection as to what this problem is caused by?
Not yet found the bad commit. We are working on it.
- Naresh