1PERF-MEM(1) perf Manual PERF-MEM(1)
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6 perf-mem - Profile memory accesses
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9 perf mem [<options>] (record [<command>] | report)
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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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27 <command>...
28 Any command you can specify in a shell.
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30 -i, --input=<file>
31 Input file name.
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33 -f, --force
34 Don’t do ownership validation
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36 -t, --type=<type>
37 Select the memory operation type: load or store (default:
38 load,store)
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40 -D, --dump-raw-samples
41 Dump the raw decoded samples on the screen in a format that is easy
42 to parse with one sample per line.
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44 -x, --field-separator=<separator>
45 Specify the field separator used when dump raw samples (-D option).
46 By default, The separator is the space character.
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48 -C, --cpu=<cpu>
49 Monitor only on the list of CPUs provided. Multiple CPUs can be
50 provided as a comma-separated list with no space: 0,1. Ranges of
51 CPUs are specified with -: 0-2. Default is to monitor all CPUS.
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53 -U, --hide-unresolved
54 Only display entries resolved to a symbol.
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56 -p, --phys-data
57 Record/Report sample physical addresses
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60 -e, --event <event>
61 Event selector. Use perf mem record -e list to list available
62 events.
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64 -K, --all-kernel
65 Configure all used events to run in kernel space.
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67 -U, --all-user
68 Configure all used events to run in user space.
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70 -v, --verbose
71 Be more verbose (show counter open errors, etc)
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73 --ldlat <n>
74 Specify desired latency for loads event. (x86 only)
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76 In addition, for report all perf report options are valid, and for
77 record all perf record options.
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80 perf-record(1), perf-report(1)
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84perf 04/23/2020 PERF-MEM(1)