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92 lines
2.6 KiB
Plaintext
92 lines
2.6 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * scalability_and_performance/using-node-tuning-operator.adoc
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// * post_installation_configuration/node-tasks.adoc
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[id="custom-tuning-default-profiles-set_{context}"]
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= Default profiles set on a cluster
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The following are the default profiles set on a cluster.
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[source,yaml]
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----
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apiVersion: tuned.openshift.io/v1
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kind: Tuned
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metadata:
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name: default
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namespace: openshift-cluster-node-tuning-operator
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spec:
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profile:
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- name: "openshift"
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data: |
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[main]
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summary=Optimize systems running OpenShift (parent profile)
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include=${f:virt_check:virtual-guest:throughput-performance}
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[selinux]
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avc_cache_threshold=8192
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[net]
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nf_conntrack_hashsize=131072
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[sysctl]
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net.ipv4.ip_forward=1
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kernel.pid_max=>4194304
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net.netfilter.nf_conntrack_max=1048576
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net.ipv4.conf.all.arp_announce=2
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net.ipv4.neigh.default.gc_thresh1=8192
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net.ipv4.neigh.default.gc_thresh2=32768
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net.ipv4.neigh.default.gc_thresh3=65536
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net.ipv6.neigh.default.gc_thresh1=8192
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net.ipv6.neigh.default.gc_thresh2=32768
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net.ipv6.neigh.default.gc_thresh3=65536
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vm.max_map_count=262144
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[sysfs]
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/sys/module/nvme_core/parameters/io_timeout=4294967295
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/sys/module/nvme_core/parameters/max_retries=10
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- name: "openshift-control-plane"
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data: |
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[main]
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summary=Optimize systems running OpenShift control plane
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include=openshift
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[sysctl]
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# ktune sysctl settings, maximizing i/o throughput
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#
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# Minimal preemption granularity for CPU-bound tasks:
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# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
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kernel.sched_min_granularity_ns=10000000
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# The total time the scheduler will consider a migrated process
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# "cache hot" and thus less likely to be re-migrated
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# (system default is 500000, i.e. 0.5 ms)
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kernel.sched_migration_cost_ns=5000000
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# SCHED_OTHER wake-up granularity.
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#
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# Preemption granularity when tasks wake up. Lower the value to
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# improve wake-up latency and throughput for latency critical tasks.
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kernel.sched_wakeup_granularity_ns=4000000
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- name: "openshift-node"
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data: |
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[main]
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summary=Optimize systems running OpenShift nodes
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include=openshift
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[sysctl]
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net.ipv4.tcp_fastopen=3
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fs.inotify.max_user_watches=65536
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fs.inotify.max_user_instances=8192
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recommend:
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- profile: "openshift-control-plane"
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priority: 30
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match:
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- label: "node-role.kubernetes.io/master"
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- label: "node-role.kubernetes.io/infra"
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- profile: "openshift-node"
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priority: 40
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----
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