Expected MBA controller but not requested while configuring MBA in %

Hi, I am using MBA to limit memory bandwidth of COS1. However, I was unable to configure MBA in % (I succeeded in configuring it in MB/s). The following is the commands and outputs. Could you please help me? Thanks!

$ sudo pqos -e 'mba_max:1=20000' NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. SOCKET 0 MBA COS1 => 20000 MBps SOCKET 1 MBA COS1 => 20000 MBps Allocation configuration altered. $ sudo pqos -I -e 'mba:1=100' NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. ERROR: Expected MBA controller but not requested! SOCKET 0 MBA COS1 - FAILED! Allocation configuration error! $ sudo pqos -e 'mba:1=100' NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. ERROR: Expected MBA controller but not requested! SOCKET 0 MBA COS1 - FAILED! Allocation configuration error!

other information: intel-cmt-cat commit: ce819d5fedc91fae1f148f91ed29e5d37d322060 $ sudo pqos -d NOTE: Mixed use of MSR and kernel interfaces to manage CAT or CMT & MBM may lead to unexpected behavior. OS capabilities (Linux kernel 5.4.0-182-generic) Monitoring Cache Monitoring Technology (CMT) events: LLC Occupancy (LLC) I/O RDT: unsupported Memory Bandwidth Monitoring (MBM) events: Local Memory Bandwidth (LMEM) I/O RDT: unsupported Total Memory Bandwidth (TMEM) I/O RDT: unsupported Remote Memory Bandwidth (RMEM) (calculated) I/O RDT: unsupported PMU events: LLC misses LLC references Instructions/Clock (IPC) Allocation Memory Bandwidth Allocation (MBA) Num COS: 8 CTRL: enabled

kernel: 5.4.0-182-generic os version: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.4 LTS Release: 20.04 Codename: focal $ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian Address sizes: 46 bits physical, 48 bits virtual CPU(s): 64 On-line CPU(s) list: 0-63 Thread(s) per core: 2 Core(s) per socket: 16 Socket(s): 2 NUMA node(s): 2 Vendor ID: GenuineIntel CPU family: 6 Model: 85 Model name: Intel(R) Xeon(R) Silver 4216 CPU @ 2.10GHz Stepping: 7 CPU MHz: 980.795 CPU max MHz: 3200.0000 CPU min MHz: 800.0000 BogoMIPS: 4200.00 Virtualization: VT-x L1d cache: 1 MiB L1i cache: 1 MiB L2 cache: 32 MiB L3 cache: 44 MiB NUMA node0 CPU(s): 0-15,32-47 NUMA node1 CPU(s): 16-31,48-63 Vulnerability Gather data sampling: Mitigation; Microcode Vulnerability Itlb multihit: KVM: Mitigation: Split huge pages Vulnerability L1tf: Not affected Vulnerability Mds: Not affected Vulnerability Meltdown: Not affected Vulnerability Mmio stale data: Mitigation; Clear CPU buffers; SMT vulnerable Vulnerability Retbleed: Mitigation; Enhanced IBRS Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Vulnerability Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB fillin g, PBRSB-eIBRS SW sequence Vulnerability Srbds: Not affected Vulnerability Tsx async abort: Mitigation; TSX disabled Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mc a cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts repgood nopl xtopology nonstop tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cp l vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dc a sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpu id_fault epb cat_l3 cdp_l3 invpcid_single intel_ppin ss bd mba ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi fl expriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx 2 smep bmi2 erms invpcid cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx5 12bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cq m_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts hwp hwp_act_window hwp_pkg_req pku ospke avx51 2_vnni md_clear flush_l1d arch_capabilities

intel / intel-cmt-cat

Expected MBA controller but not requested while configuring MBA in % #276