perf-mem - Online in the Cloud

PROGRAM:

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.

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