Limit number of pods spawned in SchedulerPredicates validates resource limits of pods that are allowed to run test

Add min size of pod and max number of pods for SchedulerPredicates validate resouce limits test

Fix typo in patch for SchedulerPredicates validate resouce limits test

Moving max number of pods and min pod cpu request to constants

test/e2e/scheduler_predicates.go

@@ -35,6 +35,9 @@ import (
 	_ "github.com/stretchr/testify/assert"
 )
 
+const maxNumberOfPods int64 = 10
+const minPodCPURequest int64 = 500
+
 // variable set in BeforeEach, never modified afterwards
 var masterNodes sets.String
 
@@ -262,11 +265,16 @@ var _ = framework.KubeDescribe("SchedulerPredicates [Serial]", func() {
 	// It assumes that cluster add-on pods stay stable and cannot be run in parallel with any other test that touches Nodes or Pods.
 	// It is so because we need to have precise control on what's running in the cluster.
 	It("validates resource limits of pods that are allowed to run [Conformance]", func() {
+		nodeMaxCapacity := int64(0)
+
 		nodeToCapacityMap := make(map[string]int64)
 		for _, node := range nodeList.Items {
 			capacity, found := node.Status.Capacity["cpu"]
 			Expect(found).To(Equal(true))
 			nodeToCapacityMap[node.Name] = capacity.MilliValue()
+			if nodeMaxCapacity < capacity.MilliValue() {
+				nodeMaxCapacity = capacity.MilliValue()
+			}
 		}
 		waitForStableCluster(c)
 
@@ -281,7 +289,12 @@ var _ = framework.KubeDescribe("SchedulerPredicates [Serial]", func() {
 		}
 
 		var podsNeededForSaturation int
-		milliCpuPerPod := int64(500)
+
+		milliCpuPerPod := nodeMaxCapacity / maxNumberOfPods
+		if milliCpuPerPod < minPodCPURequest {
+			milliCpuPerPod = minPodCPURequest
+		}
+		framework.Logf("Using pod capacity: %vm", milliCpuPerPod)
 		for name, leftCapacity := range nodeToCapacityMap {
 			framework.Logf("Node: %v has cpu capacity: %vm", name, leftCapacity)
 			podsNeededForSaturation += (int)(leftCapacity / milliCpuPerPod)