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' TAP version 13 1..1 # timeout set to 120 # selftests: resctrl: resctrl_tests # TAP version 13 # # Pass: Check kernel supports resctrl filesystem # # Pass: Check resctrl mountpoint "/sys/fs/resctrl" exists # # resctrl filesystem not mounted # # dmesg: [ 3.060018] resctrl: L3 allocation detected # # dmesg: [ 3.098180] resctrl: MB allocation detected # # dmesg: [ 3.118507] resctrl: L3 monitoring detected # 1..4 # # Starting MBM BW change ... # # Mounting resctrl to "/sys/fs/resctrl" # # Mounting resctrl to "/sys/fs/resctrl" # # Benchmark PID: 14784 # # Writing benchmark parameters to resctrl FS # # Write schema "MB:0=100" to resctrl FS # # Checking for pass/fail # # Fail: Check MBM diff within 5% # # avg_diff_per: 100% # # Span (MB): 250 # # avg_bw_imc: 14185 # # avg_bw_resc: 28389 # not ok 1 MBM: bw change # # Intel MBM may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration. # # Starting MBA Schemata change ... # # Mounting resctrl to "/sys/fs/resctrl" # # Mounting resctrl to "/sys/fs/resctrl" # # Benchmark PID: 14787 # # Writing benchmark parameters to resctrl FS # # Write schema "MB:0=100" to resctrl FS # # Write schema "MB:0=90" to resctrl FS # # Write schema "MB:0=80" to resctrl FS # # Write schema "MB:0=70" to resctrl FS # # Write schema "MB:0=60" to resctrl FS # # Write schema "MB:0=50" to resctrl FS # # Write schema "MB:0=40" to resctrl FS # # Write schema "MB:0=30" to resctrl FS # # Write schema "MB:0=20" to resctrl FS # # Write schema "MB:0=10" to resctrl FS # # Results are displayed in (MB) # # Fail: Check MBA diff within 5% for schemata 100 # # avg_diff_per: 99% # # avg_bw_imc: 14179 # # avg_bw_resc: 28340 # # Fail: Check MBA diff within 5% for schemata 90 # # avg_diff_per: 100% # # avg_bw_imc: 9244 # # avg_bw_resc: 18497 # # Fail: Check MBA diff within 5% for schemata 80 # # avg_diff_per: 100% # # avg_bw_imc: 9249 # # avg_bw_resc: 18504 # # Fail: Check MBA diff within 5% for schemata 70 # # avg_diff_per: 100% # # avg_bw_imc: 9250 # # avg_bw_resc: 18506 # # Fail: Check MBA diff within 5% for schemata 60 # # avg_diff_per: 100% # # avg_bw_imc: 7521 # # avg_bw_resc: 15055 # # Fail: Check MBA diff within 5% for schemata 50 # # avg_diff_per: 100% # # avg_bw_imc: 7455 # # avg_bw_resc: 14917 # # Fail: Check MBA diff within 5% for schemata 40 # # avg_diff_per: 100% # # avg_bw_imc: 5962 # # avg_bw_resc: 11934 # # Fail: Check MBA diff within 5% for schemata 30 # # avg_diff_per: 100% # # avg_bw_imc: 4208 # # avg_bw_resc: 8436 # # Fail: Check MBA diff within 5% for schemata 20 # # avg_diff_per: 98% # # avg_bw_imc: 2972 # # avg_bw_resc: 5909 # # Fail: Check MBA diff within 5% for schemata 10 # # avg_diff_per: 99% # # avg_bw_imc: 1715 # # avg_bw_resc: 3426 # # Fail: Check schemata change using MBA # # At least one test failed # not ok 2 MBA: schemata change # # Starting CMT test ... # # Mounting resctrl to "/sys/fs/resctrl" # # Mounting resctrl to "/sys/fs/resctrl" # # Cache size :6488064 # # Benchmark PID: 14793 # # Writing benchmark parameters to resctrl FS # # Checking for pass/fail # # Fail: Check cache miss rate within 15% # # Percent diff=91 # # Number of bits: 5 # # Average LLC val: 5640192 # # Cache span (bytes): 2949120 # not ok 3 CMT: test # # Intel CMT may be inaccurate when Sub-NUMA Clustering is enabled. Check BIOS configuration. # # Starting CAT test ... # # Mounting resctrl to "/sys/fs/resctrl" # # Mounting resctrl to "/sys/fs/resctrl" # # Cache size :6488064 # # Writing benchmark parameters to resctrl FS # # Write schema "L3:0=3f" to resctrl FS # # Checking for pass/fail # # Fail: Check cache miss rate within 4% # # Percent diff=6 # # Number of bits: 6 # # Average LLC val: 51475 # # Cache span (lines): 55296 # not ok 4 CAT: test # # Totals: pass:0 fail:4 xfail:0 xpass:0 skip:0 error:0 not ok 1 selftests: resctrl: resctrl_tests # exit=1 make: Leaving directory '/...l/tools/testing/selftests/resctrl' Sub-NUMA disable: xxx@xxx:~/linux_v6.5_rc1l$ sudo make -C tools/testing/selftests/resctrl run_tests ... # # Starting CAT test ... # # Mounting resctrl to "/sys/fs/resctrl" # # Mounting resctrl to "/sys/fs/resctrl" # # Cache size :6488064 # # Writing benchmark parameters to resctrl FS # # Write schema "L3:0=3f" to resctrl FS # # Checking for pass/fail # # Fail: Check cache miss rate within 4% # # Percent diff=6 # # Number of bits: 6 # # Average LLC val: 51899 # # Cache span (lines): 55296 # not ok 4 CAT: test # # Totals: pass:3 fail:1 xfail:0 xpass:0 skip:0 error:0 not ok 1 selftests: resctrl: resctrl_tests # exit=1 make: Leaving directory '/.../tools/testing/selftests/resctrl' Best regards, Shaopeng TAN
