CPU Isolation state of the art
summary
Yearly status report shows concrete fixes and remaining work: VM stat folding is disabled on nohz_full CPUs which largely removes the per-second disturbance but has exposed a few memory-pressure bugs; deferred IPI infrastructure is under development with tooling to validate static-key safety and avoid early-entry races; cpusets v2 remote root partitions land in 6.7 to allow exclusive-CPU distribution without forcing every ancestor to be a root partition; a runtime nohz_full interface remains unmerged because dynamic changes require heavyweight RCU/affinity protections.
AI-written summary · about
chapters (5)
- 0:00Introduction to CPU isolation
- 1:06Resolving VM stat overhead
- 5:31Managing deferred IPIs
- 8:06CPU set V2 enhancements
- 16:12No-hz full interface future
related talks
39mCPU isolation vs jailbreaking IPIs
25mCPU isolation tuning through cpuset
25mLinux Kernel Dynamic CPU Isolation
32mIsolation aware smp_call_function/queue_work_on APIs
32mA mechanism to isolate CPU topology information in the Linux kernel -- CPU Namespace
21mPreview: Operating Systems
15m(Impact of) Recent CPU topology changes
37mHardware Error Handling Improvement for Reliable KVM Hypervisor