* Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx> [2018-06-28 10:52:09]: > With this, perf buildid-cache will save SDT markers with reference > counter in probe cache. Perf probe will be able to probe markers > having reference counter. Ex, > > # readelf -n /tmp/tick | grep -A1 loop2 > Name: loop2 > ... Semaphore: 0x0000000010020036 > > # ./perf buildid-cache --add /tmp/tick Would this perf buildid-cache work if the executable is stripped of symbols? > # ./perf probe sdt_tick:loop2 > # ./perf stat -e sdt_tick:loop2 /tmp/tick > hi: 0 > hi: 1 > hi: 2 > ^C > Performance counter stats for '/tmp/tick': > 3 sdt_tick:loop2 > 2.561851452 seconds time elapsed Also can we document how to use SDT markers with perf under perf-probe or perf-build-cache?
