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util: enable golang profiling
Add support for golang profiling. Standard tools like go tool pprof and curl work. example: $ go tool pprof http://localhost:8080/debug/pprof/profile $ go tool pprof http://localhost:8080/debug/pprof/heap $ curl http://localhost:8080/debug/pprof/heap?debug=1 https://golang.org/pkg/net/http/pprof/ contains more details about the pprof interface. Fixes: #1699 Signed-off-by: Yati Padia <ypadia@redhat.com>
This commit is contained in:
Yati Padia
mergify[bot]
parent
9aa3520c9d
commit
774e8e4042
@ -75,6 +75,9 @@ spec:
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- "--drivername=$(DRIVER_NAME)"
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{{- if .Values.topology.enabled }}
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- "--domainlabels={{ .Values.topology.domainLabels | join "," }}"
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{{- end }}
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{{- if .Values.nodeplugin.profiling.enabled }}
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- "--enableprofiling={{ .Values.nodeplugin.profiling.enabled }}"
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{{- end }}
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env:
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- name: POD_IP
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@ -136,6 +136,9 @@ spec:
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- "--endpoint=$(CSI_ENDPOINT)"
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- "--v={{ .Values.logLevel }}"
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- "--drivername=$(DRIVER_NAME)"
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{{- if .Values.provisioner.profiling.enabled }}
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- "--enableprofiling={{ .Values.provisioner.profiling.enabled }}"
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{{- end }}
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env:
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- name: POD_IP
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valueFrom:
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@ -74,6 +74,9 @@ nodeplugin:
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loadBalancerIP: ""
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loadBalancerSourceRanges: []
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profiling:
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enabled: false
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registrar:
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image:
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repository: k8s.gcr.io/sig-storage/csi-node-driver-registrar
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@ -144,6 +147,9 @@ provisioner:
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loadBalancerIP: ""
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loadBalancerSourceRanges: []
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profiling:
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enabled: false
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provisioner:
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image:
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repository: k8s.gcr.io/sig-storage/csi-provisioner
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@ -73,6 +73,9 @@ spec:
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- "--drivername=$(DRIVER_NAME)"
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{{- if .Values.topology.enabled }}
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- "--domainlabels={{ .Values.topology.domainLabels | join "," }}"
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{{- end }}
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{{- if .Values.nodeplugin.profiling.enabled }}
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- "--enableprofiling={{ .Values.nodeplugin.profiling.enabled }}"
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{{- end }}
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env:
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- name: POD_IP
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@ -142,6 +142,9 @@ spec:
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{{- if .Values.provisioner.skipForceFlatten }}
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- "--skipforceflatten={{ .Values.provisioner.skipForceFlatten }}"
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{{- end }}
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{{- if .Values.provisioner.profiling.enabled }}
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- "--enableprofiling={{ .Values.provisioner.profiling.enabled }}"
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{{- end }}
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env:
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- name: POD_IP
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valueFrom:
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@ -85,6 +85,10 @@ nodeplugin:
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loadBalancerIP: ""
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loadBalancerSourceRanges: []
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profiling:
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# enable profiling to check for memory leaks
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enabled: false
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registrar:
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image:
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repository: k8s.gcr.io/sig-storage/csi-node-driver-registrar
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@ -169,6 +173,10 @@ provisioner:
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loadBalancerIP: ""
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loadBalancerSourceRanges: []
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profiling:
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# enable profiling to check for memory leaks
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enabled: false
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provisioner:
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image:
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repository: k8s.gcr.io/sig-storage/csi-provisioner
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@ -90,6 +90,7 @@ func init() {
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"skip image flattening if kernel support mapping of rbd images which has the deep-flatten feature")
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flag.BoolVar(&conf.Version, "version", false, "Print cephcsi version information")
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flag.BoolVar(&conf.EnableProfiling, "enableprofiling", false, "enable go profiling")
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klog.InitFlags(nil)
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if err := flag.Set("logtostderr", "true"); err != nil {
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@ -120,6 +120,7 @@ spec:
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- "--v=5"
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- "--drivername=cephfs.csi.ceph.com"
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- "--pidlimit=-1"
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- "--enableprofiling=false"
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env:
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- name: POD_IP
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valueFrom:
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@ -55,6 +55,7 @@ spec:
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- "--endpoint=$(CSI_ENDPOINT)"
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- "--v=5"
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- "--drivername=cephfs.csi.ceph.com"
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- "--enableprofiling=false"
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# If topology based provisioning is desired, configure required
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# node labels representing the nodes topology domain
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# and pass the label names below, for CSI to consume and advertise
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@ -125,6 +125,7 @@ spec:
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- "--pidlimit=-1"
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- "--rbdhardmaxclonedepth=8"
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- "--rbdsoftmaxclonedepth=4"
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- "--enableprofiling=false"
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env:
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- name: POD_IP
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valueFrom:
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@ -56,6 +56,7 @@ spec:
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- "--endpoint=$(CSI_ENDPOINT)"
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- "--v=5"
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- "--drivername=rbd.csi.ceph.com"
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- "--enableprofiling=false"
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# If topology based provisioning is desired, configure required
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# node labels representing the nodes topology domain
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# and pass the label names below, for CSI to consume and advertise
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@ -164,5 +164,12 @@ func (fs *Driver) Run(conf *util.Config) {
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util.WarningLogMsg("EnableGRPCMetrics is deprecated")
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go util.StartMetricsServer(conf)
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}
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if conf.EnableProfiling {
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if !conf.EnableGRPCMetrics {
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go util.StartMetricsServer(conf)
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}
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util.DebugLogMsg("Registering profiling handler")
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go util.EnableProfiling()
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}
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server.Wait()
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}
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@ -187,5 +187,12 @@ func (r *Driver) Run(conf *util.Config) {
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util.WarningLogMsg("EnableGRPCMetrics is deprecated")
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go util.StartMetricsServer(conf)
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}
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if conf.EnableProfiling {
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if !conf.EnableGRPCMetrics {
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go util.StartMetricsServer(conf)
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}
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util.DebugLogMsg("Registering profiling handler")
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go util.EnableProfiling()
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}
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s.Wait()
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}
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@ -3,7 +3,9 @@ package util
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import (
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"net"
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"net/http"
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"net/http/pprof"
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"net/url"
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runtime_pprof "runtime/pprof"
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"strconv"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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@ -24,3 +26,22 @@ func StartMetricsServer(c *Config) {
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FatalLogMsg("failed to listen on address %v: %s", addr, err)
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}
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}
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func addPath(name string, handler http.Handler) {
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http.Handle(name, handler)
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DebugLogMsg("DEBUG: registered profiling handler on /debug/pprof/%s\n", name)
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}
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// EnableProfiling enables golang profiling.
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func EnableProfiling() {
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for _, profile := range runtime_pprof.Profiles() {
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name := profile.Name()
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handler := pprof.Handler(name)
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addPath(name, handler)
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}
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// static profiles as listed in net/http/pprof/pprof.go:init()
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addPath("cmdline", http.HandlerFunc(pprof.Cmdline))
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addPath("profile", http.HandlerFunc(pprof.Profile))
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addPath("symbol", http.HandlerFunc(pprof.Symbol))
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addPath("trace", http.HandlerFunc(pprof.Trace))
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}
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@ -88,6 +88,7 @@ type Config struct {
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PoolTimeout time.Duration // probe timeout in seconds
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EnableGRPCMetrics bool // option to enable grpc metrics
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EnableProfiling bool // flag to enable profiling
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IsControllerServer bool // if set to true start provisoner server
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IsNodeServer bool // if set to true start node server
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Version bool // cephcsi version
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