1028f12eeSStephane Eranianperf-mem(1) 2028f12eeSStephane Eranian=========== 3028f12eeSStephane Eranian 4028f12eeSStephane EranianNAME 5028f12eeSStephane Eranian---- 6028f12eeSStephane Eranianperf-mem - Profile memory accesses 7028f12eeSStephane Eranian 8028f12eeSStephane EranianSYNOPSIS 9028f12eeSStephane Eranian-------- 10028f12eeSStephane Eranian[verse] 11028f12eeSStephane Eranian'perf mem' [<options>] (record [<command>] | report) 12028f12eeSStephane Eranian 13028f12eeSStephane EranianDESCRIPTION 14028f12eeSStephane Eranian----------- 15*67121f85SStephane Eranian"perf mem record" runs a command and gathers memory operation data 16028f12eeSStephane Eranianfrom it, into perf.data. Perf record options are accepted and are passed through. 17028f12eeSStephane Eranian 18*67121f85SStephane Eranian"perf mem report" displays the result. It invokes perf report with the 19*67121f85SStephane Eranianright set of options to display a memory access profile. By default, loads 20*67121f85SStephane Eranianand stores are sampled. Use the -t option to limit to loads or stores. 21028f12eeSStephane Eranian 22b6394097SAndi KleenNote that on Intel systems the memory latency reported is the use-latency, 23b6394097SAndi Kleennot the pure load (or store latency). Use latency includes any pipeline 24b6394097SAndi Kleenqueueing delays in addition to the memory subsystem latency. 25b6394097SAndi Kleen 26028f12eeSStephane EranianOPTIONS 27028f12eeSStephane Eranian------- 28028f12eeSStephane Eranian<command>...:: 29028f12eeSStephane Eranian Any command you can specify in a shell. 30028f12eeSStephane Eranian 31028f12eeSStephane Eranian-t:: 32028f12eeSStephane Eranian--type=:: 33*67121f85SStephane Eranian Select the memory operation type: load or store (default: load,store) 34028f12eeSStephane Eranian 35028f12eeSStephane Eranian-D:: 36028f12eeSStephane Eranian--dump-raw-samples=:: 37028f12eeSStephane Eranian Dump the raw decoded samples on the screen in a format that is easy to parse with 38028f12eeSStephane Eranian one sample per line. 39028f12eeSStephane Eranian 40028f12eeSStephane Eranian-x:: 41028f12eeSStephane Eranian--field-separator:: 42028f12eeSStephane Eranian Specify the field separator used when dump raw samples (-D option). By default, 43028f12eeSStephane Eranian The separator is the space character. 44028f12eeSStephane Eranian 45028f12eeSStephane Eranian-C:: 46028f12eeSStephane Eranian--cpu-list:: 47028f12eeSStephane Eranian Restrict dump of raw samples to those provided via this option. Note that the same 48028f12eeSStephane Eranian option can be passed in record mode. It will be interpreted the same way as perf 49028f12eeSStephane Eranian record. 50028f12eeSStephane Eranian 51028f12eeSStephane EranianSEE ALSO 52028f12eeSStephane Eranian-------- 53028f12eeSStephane Eranianlinkperf:perf-record[1], linkperf:perf-report[1] 54