diff options
| author | Stephane Eranian <eranian@google.com> | 2013-01-24 16:10:38 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-04-01 12:21:44 -0300 |
| commit | 028f12ee6beff0961781c5ed3f740e5f3b56f781 (patch) | |
| tree | 2bb9711e212df80f361868b9fc23a12f0b9fbb7d /tools/perf/Documentation | |
| parent | f4f7e28d0e813ddb997f49ae718ddf98db972292 (diff) | |
perf tools: Add new mem command for memory access profiling
This new command is a wrapper on top of perf record and perf report to
make it easier to configure for memory access profiling.
To record loads:
$ perf mem -t load rec .....
To record stores:
$ perf mem -t store rec .....
To get the report:
$ perf mem -t load rep
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359040242-8269-15-git-send-email-eranian@google.com
[ Fixed minor conflict with 66857b5 "Sort command-list.txt alphabetically" ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-mem.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt new file mode 100644 index 00000000000..888d51137fb --- /dev/null +++ b/tools/perf/Documentation/perf-mem.txt @@ -0,0 +1,48 @@ +perf-mem(1) +=========== + +NAME +---- +perf-mem - Profile memory accesses + +SYNOPSIS +-------- +[verse] +'perf mem' [<options>] (record [<command>] | report) + +DESCRIPTION +----------- +"perf mem -t <TYPE> record" runs a command and gathers memory operation data +from it, into perf.data. Perf record options are accepted and are passed through. + +"perf mem -t <TYPE> report" displays the result. It invokes perf report with the +right set of options to display a memory access profile. + +OPTIONS +------- +<command>...:: + Any command you can specify in a shell. + +-t:: +--type=:: + Select the memory operation type: load or store (default: load) + +-D:: +--dump-raw-samples=:: + Dump the raw decoded samples on the screen in a format that is easy to parse with + one sample per line. + +-x:: +--field-separator:: + Specify the field separator used when dump raw samples (-D option). By default, + The separator is the space character. + +-C:: +--cpu-list:: + Restrict dump of raw samples to those provided via this option. Note that the same + option can be passed in record mode. It will be interpreted the same way as perf + record. + +SEE ALSO +-------- +linkperf:perf-record[1], linkperf:perf-report[1] |