1perf-mem(1) 2=========== 3 4NAME 5---- 6perf-mem - Profile memory accesses 7 8SYNOPSIS 9-------- 10[verse] 11'perf mem' [<options>] (record [<command>] | report) 12 13DESCRIPTION 14----------- 15"perf mem record" runs a command and gathers memory operation data 16from it, into perf.data. Perf record options are accepted and are passed through. 17 18"perf mem report" displays the result. It invokes perf report with the 19right set of options to display a memory access profile. By default, loads 20and stores are sampled. Use the -t option to limit to loads or stores. 21 22Note that on Intel systems the memory latency reported is the use-latency, 23not the pure load (or store latency). Use latency includes any pipeline 24queueing delays in addition to the memory subsystem latency. 25 26OPTIONS 27------- 28<command>...:: 29 Any command you can specify in a shell. 30 31-t:: 32--type=:: 33 Select the memory operation type: load or store (default: load,store) 34 35-D:: 36--dump-raw-samples=:: 37 Dump the raw decoded samples on the screen in a format that is easy to parse with 38 one sample per line. 39 40-x:: 41--field-separator:: 42 Specify the field separator used when dump raw samples (-D option). By default, 43 The separator is the space character. 44 45-C:: 46--cpu-list:: 47 Restrict dump of raw samples to those provided via this option. Note that the same 48 option can be passed in record mode. It will be interpreted the same way as perf 49 record. 50 51-K:: 52--all-kernel:: 53 Configure all used events to run in kernel space. 54 55-U:: 56--all-user:: 57 Configure all used events to run in user space. 58 59--ldload:: 60 Specify desired latency for loads event. 61 62-p:: 63--phys-data:: 64 Record/Report sample physical addresses 65 66SEE ALSO 67-------- 68linkperf:perf-record[1], linkperf:perf-report[1] 69