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| author | OpenShift Merge Robot <openshift-merge-robot@users.noreply.github.com> | 2017-10-10 12:54:03 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-10-10 12:54:03 -0700 |
| commit | bb4df1cf799d66493b0679f0993cd0a1fe829a00 (patch) | |
| tree | 180ed9708afe47b1c554bab0c70f7ec33007b828 /roles/tuned/templates/openshift-control-plane | |
| parent | 48126155eade2d030398f69dc5ee32838ec08480 (diff) | |
| parent | 17e38ad8c62ac8f1c8f983e63181f69879a45d85 (diff) | |
| download | openshift-bb4df1cf799d66493b0679f0993cd0a1fe829a00.tar.gz openshift-bb4df1cf799d66493b0679f0993cd0a1fe829a00.tar.bz2 openshift-bb4df1cf799d66493b0679f0993cd0a1fe829a00.tar.xz openshift-bb4df1cf799d66493b0679f0993cd0a1fe829a00.zip | |
Merge pull request #5645 from jmencak/tuned-role-lb
Automatic merge from submit-queue.
Separate tuned daemon setup into a role.
Also adding support for the loadbalancer. It is important to raise ARP cache limits on HA setups with loadbalancers serving 1k+ nodes.
Diffstat (limited to 'roles/tuned/templates/openshift-control-plane')
| -rw-r--r-- | roles/tuned/templates/openshift-control-plane/tuned.conf | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/roles/tuned/templates/openshift-control-plane/tuned.conf b/roles/tuned/templates/openshift-control-plane/tuned.conf new file mode 100644 index 000000000..f22f21065 --- /dev/null +++ b/roles/tuned/templates/openshift-control-plane/tuned.conf @@ -0,0 +1,25 @@ +# +# 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 |