1PERF-MEM(1)                       perf Manual                      PERF-MEM(1)
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NAME

6       perf-mem - Profile memory accesses
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SYNOPSIS

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

12       "perf mem record" runs a command and gathers memory operation data from
13       it, into perf.data. Perf record options are accepted and are passed
14       through.
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16       "perf mem report" displays the result. It invokes perf report with the
17       right set of options to display a memory access profile. By default,
18       loads and stores are sampled. Use the -t option to limit to loads or
19       stores.
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21       Note that on Intel systems the memory latency reported is the
22       use-latency, not the pure load (or store latency). Use latency includes
23       any pipeline queueing delays in addition to the memory subsystem
24       latency.
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OPTIONS

27       <command>...
28           Any command you can specify in a shell.
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30       -t, --type=
31           Select the memory operation type: load or store (default:
32           load,store)
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34       -D, --dump-raw-samples=
35           Dump the raw decoded samples on the screen in a format that is easy
36           to parse with one sample per line.
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38       -x, --field-separator
39           Specify the field separator used when dump raw samples (-D option).
40           By default, The separator is the space character.
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42       -C, --cpu-list
43           Restrict dump of raw samples to those provided via this option.
44           Note that the same option can be passed in record mode. It will be
45           interpreted the same way as perf record.
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47       -K, --all-kernel
48           Configure all used events to run in kernel space.
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50       -U, --all-user
51           Configure all used events to run in user space.
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53       --ldload
54           Specify desired latency for loads event.
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56       -p, --phys-data
57           Record/Report sample physical addresses
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SEE ALSO

60       perf-record(1), perf-report(1)
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64perf                              06/18/2019                       PERF-MEM(1)
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