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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COLOPHON |
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PERF-MEM(1) perf Manual PERF-MEM(1)
perf-mem - Profile memory accesses
perf mem [<options>] (record [<command>] | report)
"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.
<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.
-K, --all-kernel
Configure all used events to run in kernel space.
-U, --all-user
Configure all used events to run in user space.
--ldload
Specify desired latency for loads event.
-p, --phys-data
Record/Report sample physical addresses
perf-record(1), perf-report(1)
This page is part of the perf (Performance analysis tools for Linux
(in Linux source tree)) project. Information about the project can
be found at ⟨https://perf.wiki.kernel.org/index.php/Main_Page⟩. If
you have a bug report for this manual page, send it to
linux-kernel@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git⟩ on
2018-02-02. (At that time, the date of the most recent commit that
was found in the repository was 2018-02-01.) If you discover any
rendering problems in this HTML version of the page, or you believe
there is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
perf 09/14/2017 PERF-MEM(1)
Pages that refer to this page: perf-c2c(1)
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