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Date: Wed, 27 Nov 2019 16:39:32 -0800 From: Fenghua Yu <fenghua.yu@...el.com> To: "Thomas Gleixner" <tglx@...utronix.de>, "Ingo Molnar" <mingo@...hat.com>, "Borislav Petkov" <bp@...en8.de>, "H Peter Anvin" <hpa@...or.com>, "Tony Luck" <tony.luck@...el.com>, "Reinette Chatre" <reinette.chatre@...el.com>, "Babu Moger" <babu.moger@....com>, "Andre Przywara" <Andre.Przywara@....com>, "Sai Praneeth Prakhya" <sai.praneeth.prakhya@...el.com>, "Ravi V Shankar" <ravi.v.shankar@...el.com> Cc: "linux-kernel" <linux-kernel@...r.kernel.org>, "x86" <x86@...nel.org>, Fenghua Yu <fenghua.yu@...el.com> Subject: [PATCH v8 01/13] selftests/resctrl: Add README for resctrl tests resctrl tests will be implemented. README is added for the tool first. Signed-off-by: Babu Moger <babu.moger@....com> Signed-off-by: Fenghua Yu <fenghua.yu@...el.com> --- tools/testing/selftests/resctrl/README | 53 ++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 tools/testing/selftests/resctrl/README diff --git a/tools/testing/selftests/resctrl/README b/tools/testing/selftests/resctrl/README new file mode 100644 index 000000000000..6e5a0ffa18e8 --- /dev/null +++ b/tools/testing/selftests/resctrl/README @@ -0,0 +1,53 @@ +resctrl_tests - resctrl file system test suit + +Authors: + Fenghua Yu <fenghua.yu@...el.com> + Sai Praneeth Prakhya <sai.praneeth.prakhya@...el.com>, + +resctrl_tests tests various resctrl functionalities and interfaces including +both software and hardware. + +Currently it supports Memory Bandwidth Monitoring test and Memory Bandwidth +Allocation test on Intel RDT hardware. More tests will be added in the future. +And the test suit can be extended to cover AMD QoS and ARM MPAM hardware +as well. + +BUILD +----- + +Run "make" to build executable file "resctrl_tests". + +RUN +--- + +To use resctrl_tests, root or sudoer privileges are required. This is because +the test needs to mount resctrl file system and change contents in the file +system. + +Executing the test without any parameter will run all supported tests: + + sudo ./resctrl_tests + +OVERVIEW OF EXECUTION +--------------------- + +A test case has four stages: + + - setup: mount resctrl file system, create group, setup schemata, move test + process pids to tasks, start benchmark. + - execute: let benchmark run + - verify: get resctrl data and verify the data with another source, e.g. + perf event. + - teardown: umount resctrl and clear temporary files. + +ARGUMENTS +--------- + +Parameter '-h' shows usage information. + +usage: resctrl_tests [-h] [-b "benchmark_cmd [options]"] [-t test list] [-n no_of_bits] + -b benchmark_cmd [options]: run specified benchmark for MBM, MBA and CQM default benchmark is builtin fill_buf + -t test list: run tests specified in the test list, e.g. -t mbm, mba, cqm, cat + -n no_of_bits: run cache tests using specified no of bits in cache bit mask + -p cpu_no: specify CPU number to run the test. 1 is default + -h: help -- 2.19.1
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