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Copy file name to clipboardExpand all lines: modules/cnf-provisioning-real-time-and-low-latency-workloads.adoc
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@@ -339,7 +339,7 @@ When you configure a node with a power saving configuration, you must configure
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By disabling P-states and C-states at the pod level, you can configure high priority workloads for best performance and lowest latency.
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.Power saving configurations
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.Configuration for high priority workloads
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[cols="1,2", options="header"]
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|====
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|Annotation
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a|[source,yaml]
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----
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annotations:
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cpu-c-states.crio.io: "enable"
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cpu-c-states.crio.io: "disable"
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cpu-freq-governor.crio.io: "<governor>"
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----
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|Provides the best performance for a pod by disabling C-states and specifying the governor type for CPU scaling. The `performance` governor is recommended for high priority workloads.
<1> The `max_perf_pct` controls the maximum frequency the `cpufreq` driver is allowed to set as a percentage of the maximum supported cpu frequency. This value applies to all CPUs. You can check the maximum supported frequency in `/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq`.
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<1> The `max_perf_pct` controls the maximum frequency the `cpufreq` driver is allowed to set as a percentage of the maximum supported cpu frequency. This value applies to all CPUs. You can check the maximum supported frequency in `/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq`. As a starting point, you can use a percentage that caps all CPUs at the `All Cores Turbo` frequency. The `All Cores Turbo` frequency is the frequency that all cores will run at when the cores are all fully occupied.
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. Add the desired annotations to your pods. The annotations override the `default` settings.
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. Add the desired annotations to your high priority workload pods. The annotations override the `default` settings.
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