On Wed, Jul 19, 2023 at 02:43:20AM +0000, Shaopeng Tan (Fujitsu) wrote: > Hi tony, > > I ran selftest/resctrl in my environment, > the test result is "not ok". > > Processer in my environment: > Intel(R) Xeon(R) Gold 6254 CPU @ 3.10GHz > > kernel: > $ uname -r > 6.5.0-rc1+ > > Result : > Sub-NUMA enable: > xxx@xxx:~/linux_v6.5_rc1l$ sudo make -C tools/testing/selftests/resctrl run_tests > make: Entering directory '/.../tools/testing/selftests/resctrl' I see most tests pass. Just one fail on my most recent run with the v4 patch series: # # Fail: Check MBA diff within 5% for schemata 10 # # avg_diff_per: 7% # # avg_bw_imc: 883 # # avg_bw_resc: 815 # # Fail: Check schemata change using MBA But just missed the 5% target by a small amount, not the near total failures that you see. I wonder if there is a cross-SNC node memory allocation issue. Can you try running the test bound to a CPU in one node: $ taskset -c 1 sudo make -C tools/testing/selftests/resctrl run_tests Try with different "-c" arguments to bind to different nodes. Do you see different results on differnt nodes? -Tony
