Remove the deprecated metrics from scheduler

Deprecated metrics are removed and suggest to use the Histogram
metrics got from scheduler extension points.

Signed-off-by: Dave Chen <dave.chen@arm.com>
Co-authored-by: wawa0210 <xiaozhang0210@hotmail.com>

pkg/scheduler/framework/plugins/defaultpreemption/default_preemption.go

@@ -23,7 +23,6 @@ import (
 	"math/rand"
 	"sort"
 	"sync/atomic"
-	"time"
 
 	"k8s.io/klog/v2"
 
@@ -89,10 +88,8 @@ func New(dpArgs runtime.Object, fh framework.Handle) (framework.Plugin, error) {
 
 // PostFilter invoked at the postFilter extension point.
 func (pl *DefaultPreemption) PostFilter(ctx context.Context, state *framework.CycleState, pod *v1.Pod, m framework.NodeToStatusMap) (*framework.PostFilterResult, *framework.Status) {
-	preemptionStartTime := time.Now()
 	defer func() {
 		metrics.PreemptionAttempts.Inc()
-		metrics.DeprecatedSchedulingAlgorithmPreemptionEvaluationDuration.Observe(metrics.SinceInSeconds(preemptionStartTime))
 	}()
 
 	nnn, err := pl.preempt(ctx, state, pod, m)

pkg/scheduler/metrics/metrics.go

@@ -67,26 +67,6 @@ var (
 			StabilityLevel: metrics.ALPHA,
 		},
 	)
-	DeprecatedSchedulingAlgorithmPreemptionEvaluationDuration = metrics.NewHistogram(
-		&metrics.HistogramOpts{
-			Subsystem:         SchedulerSubsystem,
-			Name:              "scheduling_algorithm_preemption_evaluation_seconds",
-			Help:              "Scheduling algorithm preemption evaluation duration in seconds",
-			Buckets:           metrics.ExponentialBuckets(0.001, 2, 15),
-			StabilityLevel:    metrics.ALPHA,
-			DeprecatedVersion: "1.20.0",
-		},
-	)
-	DeprecatedBindingLatency = metrics.NewHistogram(
-		&metrics.HistogramOpts{
-			Subsystem:         SchedulerSubsystem,
-			Name:              "binding_duration_seconds",
-			Help:              "Binding latency in seconds",
-			Buckets:           metrics.ExponentialBuckets(0.001, 2, 15),
-			StabilityLevel:    metrics.ALPHA,
-			DeprecatedVersion: "1.20.0",
-		},
-	)
 	PreemptionVictims = metrics.NewHistogram(
 		&metrics.HistogramOpts{
 			Subsystem: SchedulerSubsystem,
@@ -191,8 +171,6 @@ var (
 		scheduleAttempts,
 		e2eSchedulingLatency,
 		SchedulingAlgorithmLatency,
-		DeprecatedBindingLatency,
-		DeprecatedSchedulingAlgorithmPreemptionEvaluationDuration,
 		PreemptionVictims,
 		PreemptionAttempts,
 		pendingPods,

pkg/scheduler/scheduler.go

@@ -379,9 +379,8 @@ func (sched *Scheduler) assume(assumed *v1.Pod, host string) error {
 // The precedence for binding is: (1) extenders and (2) framework plugins.
 // We expect this to run asynchronously, so we handle binding metrics internally.
 func (sched *Scheduler) bind(ctx context.Context, fwk framework.Framework, assumed *v1.Pod, targetNode string, state *framework.CycleState) (err error) {
-	start := time.Now()
 	defer func() {
-		sched.finishBinding(fwk, assumed, targetNode, start, err)
+		sched.finishBinding(fwk, assumed, targetNode, err)
 	}()
 
 	bound, err := sched.extendersBinding(assumed, targetNode)
@@ -412,7 +411,7 @@ func (sched *Scheduler) extendersBinding(pod *v1.Pod, node string) (bool, error)
 	return false, nil
 }
 
-func (sched *Scheduler) finishBinding(fwk framework.Framework, assumed *v1.Pod, targetNode string, start time.Time, err error) {
+func (sched *Scheduler) finishBinding(fwk framework.Framework, assumed *v1.Pod, targetNode string, err error) {
 	if finErr := sched.SchedulerCache.FinishBinding(assumed); finErr != nil {
 		klog.Errorf("scheduler cache FinishBinding failed: %v", finErr)
 	}
@@ -421,7 +420,6 @@ func (sched *Scheduler) finishBinding(fwk framework.Framework, assumed *v1.Pod,
 		return
 	}
 
-	metrics.DeprecatedBindingLatency.Observe(metrics.SinceInSeconds(start))
 	fwk.EventRecorder().Eventf(assumed, nil, v1.EventTypeNormal, "Scheduled", "Binding", "Successfully assigned %v/%v to %v", assumed.Namespace, assumed.Name, targetNode)
 }
 

test/integration/scheduler_perf/scheduler_perf_test.go

@@ -51,9 +51,7 @@ var (
 		Metrics: []string{
 			"scheduler_scheduling_algorithm_predicate_evaluation_seconds",
 			"scheduler_scheduling_algorithm_priority_evaluation_seconds",
-			"scheduler_binding_duration_seconds",
 			"scheduler_e2e_scheduling_duration_seconds",
-			"scheduler_scheduling_algorithm_preemption_evaluation_seconds",
 			"scheduler_pod_scheduling_duration_seconds",
 		},
 	}