perf_3.16-lock1
Analyze lock events
Usage
perf lock
{record | report | script | info}
Overview
You can analyze various lock behaviours and statistics with this perf lock command.
'perf lock record <command>' records lock events between start and end <command>. And this command produces the file "perf.data" which contains tracing results of lock events.
'perf lock report' reports statistical data.
'perf lock script' shows raw lock events.
'perf lock info' shows metadata like threads or addresses of lock instances.
Options
-
-i, --input=<file> -
Input file name. (default: perf.data unless stdin is a fifo)
-
-v, --verbose -
Be more verbose (show symbol address, etc).
-
-D, --dump-raw-trace -
Dump raw trace in ASCII.
Options
-
-k, --key=<value> -
Sorting key. Possible values: acquired (default), contended, avg_wait, wait_total, wait_max, wait_min.
Options
-
-t, --threads -
dump thread list in perf.data
-
-m, --map -
dump map of lock instances (address:name table)