perf-mem(1) =========== NAME ---- perf-mem - Profile memory accesses SYNOPSIS -------- [verse] 'perf mem' [] (record [] | 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 ------- ...:: 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. SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-report[1] i/linux/net-next.git/commit/sound/pcmcia'>commitdiff
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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 21:58:13 -0800
commite7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba (patch)
treef63906f41699c8e38af9d12b063e2ceab0286ef2 /sound/pcmcia
parente34bac726d27056081d0250c0e173e4b155aa340 (diff)
parent868c97a846a73e937d835b09b8c885a69df50ec8 (diff)
Merge tag 'docs-4.10' of git://git.lwn.net/linuxHEADmaster
Pull documentation update from Jonathan Corbet: "These are the documentation changes for 4.10. It's another busy cycle for the docs tree, as the sphinx conversion continues. Highlights include: - Further work on PDF output, which remains a bit of a pain but should be more solid now. - Five more DocBook template files converted to Sphinx. Only 27 to go... Lots of plain-text files have also been converted and integrated. - Images in binary formats have been replaced with more source-friendly versions. - Various bits of organizational work, including the renaming of various files discussed at the kernel summit. - New documentation for the device_link mechanism. ... and, of course, lots of typo fixes and small updates" * tag 'docs-4.10' of git://git.lwn.net/linux: (193 commits) dma-buf: Extract dma-buf.rst Update Documentation/00-INDEX docs: 00-INDEX: document directories/files with no docs docs: 00-INDEX: remove non-existing entries docs: 00-INDEX: add missing entries for documentation files/dirs docs: 00-INDEX: consolidate process/ and admin-guide/ description scripts: add a script to check if Documentation/00-INDEX is sane Docs: change sh -> awk in REPORTING-BUGS Documentation/core-api/device_link: Add initial documentation core-api: remove an unexpected unident ppc/idle: Add documentation for powersave=off Doc: Correct typo, "Introdution" => "Introduction" Documentation/atomic_ops.txt: convert to ReST markup Documentation/local_ops.txt: convert to ReST markup Documentation/assoc_array.txt: convert to ReST markup docs-rst: parse-headers.pl: cleanup the documentation docs-rst: fix media cleandocs target docs-rst: media/Makefile: reorganize the rules docs-rst: media: build SVG from graphviz files docs-rst: replace bayer.png by a SVG image ...
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