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- #
- # tuned configuration
- #
- [main]
- summary=Optimize systems running OpenShift control plane
- include=openshift
- [sysctl]
- # ktune sysctl settings, maximizing i/o throughput
- #
- # Minimal preemption granularity for CPU-bound tasks:
- # (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
- kernel.sched_min_granularity_ns=10000000
- # The total time the scheduler will consider a migrated process
- # "cache hot" and thus less likely to be re-migrated
- # (system default is 500000, i.e. 0.5 ms)
- kernel.sched_migration_cost_ns=5000000
- # SCHED_OTHER wake-up granularity.
- #
- # Preemption granularity when tasks wake up. Lower the value to improve
- # wake-up latency and throughput for latency critical tasks.
- kernel.sched_wakeup_granularity_ns = 4000000
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