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- perf-mem(1)
- ===========
- NAME
- ----
- perf-mem - Profile memory accesses
- SYNOPSIS
- --------
- [verse]
- '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.
- -i::
- --input=<file>::
- Input file name.
- -f::
- --force::
- Don't do ownership validation
- -t::
- --type=<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=<separator>::
- Specify the field separator used when dump raw samples (-D option). By default,
- The separator is the space character.
- -C::
- --cpu=<cpu>::
- Monitor only on the list of CPUs provided. Multiple CPUs can be provided as a
- comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2. Default
- is to monitor all CPUS.
- -U::
- --hide-unresolved::
- Only display entries resolved to a symbol.
- -p::
- --phys-data::
- Record/Report sample physical addresses
- RECORD OPTIONS
- --------------
- -e::
- --event <event>::
- Event selector. Use 'perf mem record -e list' to list available events.
- -K::
- --all-kernel::
- Configure all used events to run in kernel space.
- -U::
- --all-user::
- Configure all used events to run in user space.
- -v::
- --verbose::
- Be more verbose (show counter open errors, etc)
- --ldlat <n>::
- Specify desired latency for loads event.
- In addition, for report all perf report options are valid, and for record
- all perf record options.
- SEE ALSO
- --------
- linkperf:perf-record[1], linkperf:perf-report[1]
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