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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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James ClarkandArnaldo Carvalho de Melo
2540d48595
Add a workload that runs X threads that run a unique function named "named_threads_thread[x]" which performs a multiplication in a loop for Y loops. Each thread sets its name to "thread[x]". This can be used to test that processor trace decoding handles concurrent threads correctly and the correct symbols and thread names are assigned to samples. Signed-off-by: James Clark <james.clark@linaro.org> Cc: Amir Ayupov <aaupov@meta.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Leo Yan <leo.yan@arm.com> Cc: Mike Leach <mike.leach@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paschalis Mpeis <Paschalis.Mpeis@arm.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
88 lines
2.4 KiB
Plaintext
88 lines
2.4 KiB
Plaintext
perf-test(1)
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============
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NAME
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----
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perf-test - Runs sanity tests.
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SYNOPSIS
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--------
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[verse]
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'perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]'
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DESCRIPTION
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-----------
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This command does assorted sanity tests, initially through linked routines but
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also will look for a directory with more tests in the form of scripts.
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To get a list of available tests use 'perf test list', specifying a test name
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fragment will show all tests that have it.
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To run just specific tests, inform test name fragments or the numbers obtained
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from 'perf test list'.
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OPTIONS
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-------
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-s::
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--skip::
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Tests to skip (comma separated numeric list).
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-v::
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-vv::
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-vvv::
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--verbose::
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With a single '-v', verbose level 1, only failing test output
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is displayed. With '-vv' and higher all test output is shown.
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-S::
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--sequential::
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Run all tests one after the other. By default "exclusive"
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tests are run sequentially, but other tests are run in
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parallel to speed execution.
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-r::
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--runs-per-test::
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Run each test the given number of times, by default once. This
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option can be useful to determine if a test is flaky.
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-F::
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--dont-fork::
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Do not fork child for each test, run all tests within single process, this
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sets sequential mode.
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--dso::
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Specify a DSO for the "Symbols" test.
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-w::
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--workload=::
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Run a built-in workload, to list them use '--list-workloads', current
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ones include: noploop, thloop, leafloop, sqrtloop, brstack, datasym,
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context_switch_loop, deterministic, named_threads and landlock.
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Used with the shell script regression tests.
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Some accept an extra parameter:
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seconds: leafloop, noploop, sqrtloop, thloop
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nrloops: brstack, context_switch_loop
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'named_threads' accepts the number of threads and the number of loops to
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do in each thread.
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The datasym, landlock and deterministic workloads don't accept any.
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--list-workloads::
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List the available workloads to use with -w/--workload.
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--record-ctl=fifo:ctl-fifo[,ack-fifo]::
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This option is used to communicate with a perf record session in order
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to control the recording scope to only the workload and avoid recording
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setup and teardown code. When specifying this option, the same FIFO path
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must be specified in the record session via:
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perf record -D -1 --control=fifo:ctl-fifo[,ack-fifo] ...
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Perf test sends 'enable' and 'disable' commands through ctl-fifo to
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control event recording. If 'ack-fifo' is provided, the workload runner
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waits for an 'ack' response after each command.
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