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path: root/tools/testing/selftests/resctrl/resctrl_val.c
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2020-02-10selftests/resctrl: Add Cache QoS Monitoring (CQM) selftestFenghua Yu1-6/+57
Cache QoS Monitoring (CQM) selftest starts stressful cache benchmark with specified size of memory to access the cache. Last Level cache occupancy reported by CQM should be close to the size of the memory. Co-developed-by: Sai Praneeth Prakhya <[email protected]> Signed-off-by: Sai Praneeth Prakhya <[email protected]> Co-developed-by: Babu Moger <[email protected]> Signed-off-by: Babu Moger <[email protected]> Signed-off-by: Fenghua Yu <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-02-10selftests/resctrl: Add MBM testFenghua Yu1-0/+2
MBM (Memory Bandwidth Monitoring) test is the first implemented selftest. It starts a stressful memory bandwidth benchmark and assigns the bandwidth pid in a resctrl monitoring group. Read and compare perf IMC counter and MBM total bytes for the benchmark. The numbers should be close enough to pass the test. Default benchmark is built-in fill_buf. But users can specify their own benchmark by option "-b". We can add memory bandwidth monitoring for multiple processes in the future. Co-developed-by: Sai Praneeth Prakhya <[email protected]> Signed-off-by: Sai Praneeth Prakhya <[email protected]> Co-developed-by: Babu Moger <[email protected]> Signed-off-by: Babu Moger <[email protected]> Signed-off-by: Fenghua Yu <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-02-10selftests/resctrl: Add callback to start a benchmarkSai Praneeth Prakhya1-0/+574
The callback starts a child process and puts the child pid in created resctrl group with specified memory bandwidth in schemata. The child starts running benchmark. Signed-off-by: Sai Praneeth Prakhya <[email protected]> Co-developed-by: Babu Moger <[email protected]> Signed-off-by: Babu Moger <[email protected]> Co-developed-by: Fenghua Yu <[email protected]> Signed-off-by: Fenghua Yu <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2020-02-10selftests/resctrl: Read memory bandwidth from perf IMC counter and from ↵Sai Praneeth Prakhya1-0/+117
resctrl file system Total memory bandwidth can be monitored from perf IMC counter and from resctrl file system. Later the two will be compared to verify the total memory bandwidth read from resctrl is correct. Signed-off-by: Sai Praneeth Prakhya <[email protected]> Co-developed-by: Babu Moger <[email protected]> Signed-off-by: Babu Moger <[email protected]> Co-developed-by: Fenghua Yu <[email protected]> Signed-off-by: Fenghua Yu <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
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