NAME

       perf-mem - Profile memory accesses

SYNOPSIS

       perf mem [<options>] (record [<command>] | report)

DESCRIPTION

       "perf mem 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 report" displays the result. It invokes perf report with the right set of
       options to display a memory access profile. By default, loads and stores are sampled. Use
       the -t option to limit to loads or stores.

       Note that on Intel systems the memory latency reported is the use-latency, not the pure
       load (or store latency). Use latency includes any pipeline queueing delays in addition to
       the memory subsystem latency.

OPTIONS

       <command>...
           Any command you can specify in a shell.

       -t, --type=
           Select the memory operation type: load or store (default: load,store)

       -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

       perf-record(1), perf-report(1)