How to lock all CPUs to C-State 0 with the cpu-partitioning profile in Red Hat Enterprise Linux and Red Hat OpenStack Platform?
Issue
How to lock all CPUs to C-State 0 with the cpu-partitioning profile in Red Hat Enterprise Linux and Red Hat OpenStack Platform?
When using cpu-partitioning, CPUs still go into C1:
[root@overcloud-compute-0 ~]# tuned-adm profile cpu-partitioning
[root@overcloud-compute-0 ~]# turbostat sleep 5
5.001639 sec
Core CPU Avg_MHz Busy% Bzy_MHz TSC_MHz IRQ SMI CPU%c1 CPU%c3 CPU%c6 CPU%c7 CoreTmp PkgTmp PkgWatt RAMWatt PKG_% RAM_%
- - 242 10.04 2400 2209 0 0 89.96 0.00 0.00 0.00 61 65 64.87 9.67 0.00 0.00
0 0 2430 100.00 2400 2228 0 0 0.00 0.00 0.00 0.00 59 65 35.04 3.92 0.00 0.00
0 20 2422 100.00 2400 2220 0 0 0.00
1 2 26 1.06 2400 2220 0 0 98.94 0.00 0.00 0.00 57
1 22 0 0.00 2401 2220 0 0 100.00
2 4 0 0.00 2400 2220 0 0 100.00 0.00 0.00 0.00 57
2 24 0 0.00 2400 2220 0 0 100.00
3 6 0 0.00 2401 2220 0 0 100.00 0.00 0.00 0.00 58
3 26 0 0.00 2402 2220 0 0 100.00
4 8 0 0.00 2402 2220 0 0 100.00 0.00 0.00 0.00 57
4 28 0 0.00 2400 2220 0 0 100.00
8 10 0 0.00 2401 2220 0 0 100.00 0.00 0.00 0.00 57
8 30 0 0.00 2403 2220 0 0 100.00
9 12 0 0.00 2402 2220 0 0 100.00 0.00 0.00 0.00 57
9 32 0 0.00 2403 2220 0 0 100.00
10 14 0 0.00 2401 2220 0 0 100.00 0.00 0.00 0.00 56
10 34 0 0.00 2401 2220 0 0 100.00
Environment
Red Hat Enterprise Linux 7
Red Hat OpenStack Platform 10
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