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diff --git a/tools/perf/Documentation/perf-test.txt b/tools/perf/Documentation/perf-test.txt new file mode 100644 index 000000000..859df74e6 --- /dev/null +++ b/tools/perf/Documentation/perf-test.txt @@ -0,0 +1,89 @@ +perf-test(1) +============ + +NAME +---- +perf-test - Runs sanity tests. + +SYNOPSIS +-------- +[verse] +'perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]' + +DESCRIPTION +----------- +This command does assorted sanity tests, initially through linked routines but +also will look for a directory with more tests in the form of scripts. + +To get a list of available tests use 'perf test list', specifying a test name +fragment will show all tests that have it. + +To run just specific tests, inform test name fragments or the numbers obtained +from 'perf test list'. + +OPTIONS +------- +-s:: +--skip:: + Tests to skip (comma separated numeric list). + +-v:: +-vv:: +-vvv:: +--verbose:: + With a single '-v', verbose level 1, only failing test output + is displayed. With '-vv' and higher all test output is shown. + +-S:: +--sequential:: + Run all tests one after the other. By default "exclusive" + tests are run sequentially, but other tests are run in + parallel to speed execution. + +-r:: +--runs-per-test:: + Run each test the given number of times, by default once. This + option can be useful to determine if a test is flaky. + +-F:: +--dont-fork:: + Do not fork child for each test, run all tests within single process, this + sets sequential mode. + +--dso:: + Specify a DSO for the "Symbols" test. + +-w:: +--workload=:: + Run a built-in workload, to list them use '--list-workloads', current + ones include: noploop, thloop, leafloop, sqrtloop, brstack, datasym, + context_switch_loop, deterministic, named_threads, landlock and + callchain. + + Used with the shell script regression tests. + + Some accept an extra parameter: + + seconds: leafloop, noploop, sqrtloop, thloop + nrloops: brstack, context_switch_loop + + 'named_threads' accepts the number of threads and the number of loops to + do in each thread. + + The datasym, landlock, deterministic and callchain workloads don't accept + any. + +--list-workloads:: + List the available workloads to use with -w/--workload. + +--record-ctl=fifo:ctl-fifo[,ack-fifo]:: + This option is used to communicate with a perf record session in order + to control the recording scope to only the workload and avoid recording + setup and teardown code. When specifying this option, the same FIFO path + must be specified in the record session via: + + perf record -D -1 --control=fifo:ctl-fifo[,ack-fifo] ... + + Perf test sends 'enable' and 'disable' commands through ctl-fifo to + control event recording. If 'ack-fifo' is provided, the workload runner + waits for an 'ack' response after each command. |
