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
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
