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*: Make docs more accurate for the contention-profiling flag

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The --contention-profiling flag enables block profiling by calling
SetBlockProfileRate(). It, however does not call SetMutexProfileFraction
which enables mutex profiling.

Mutex profiling gives us information about lock contention whereas
block profiling on the other hand gives us information on gorotuines
being blocked on sync primitives.

Updating the docs to "block profiling" in order to make it more accurate.
Eventhough a block profile may reflect contention points on locks to some
extent, it also talks about other sources where goroutines may be blocked.

Signed-off-by: Madhav Jivrajani <madhav.jiv@gmail.com>
This commit is contained in:
Madhav Jivrajani
2022-12-14 17:34:47 +05:30
parent 5943f50dfa
commit f236ab24df
4 changed files with 4 additions and 4 deletions
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2
cmd/kube-scheduler/app/options/deprecated.go
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@@ -44,7 +44,7 @@ func (o *DeprecatedOptions) AddFlags(fs *pflag.FlagSet) {
}
fs.BoolVar(&o.EnableProfiling, "profiling", true, "DEPRECATED: enable profiling via web interface host:port/debug/pprof/. This parameter is ignored if a config file is specified in --config.")
fs.BoolVar(&o.EnableContentionProfiling, "contention-profiling", true, "DEPRECATED: enable lock contention profiling, if profiling is enabled. This parameter is ignored if a config file is specified in --config.")
fs.BoolVar(&o.EnableContentionProfiling, "contention-profiling", true, "DEPRECATED: enable block profiling, if profiling is enabled. This parameter is ignored if a config file is specified in --config.")
fs.StringVar(&o.Kubeconfig, "kubeconfig", "", "DEPRECATED: path to kubeconfig file with authorization and master location information. This parameter is ignored if a config file is specified in --config.")
fs.StringVar(&o.ContentType, "kube-api-content-type", "application/vnd.kubernetes.protobuf", "DEPRECATED: content type of requests sent to apiserver. This parameter is ignored if a config file is specified in --config.")
fs.Float32Var(&o.QPS, "kube-api-qps", 50.0, "DEPRECATED: QPS to use while talking with kubernetes apiserver. This parameter is ignored if a config file is specified in --config.")