Merge pull request #64936 from wgliang/master.scheduler_perf_test

Automatic merge from submit-queue (batch tested with PRs 64122, 64936, 65288, 65383). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fix integer divide by zero panic

**What this PR does / why we need it**:
/kind bug

fix integer divide by zero panic when time.Since(start) < 1s

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #64935

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

test/integration/scheduler_perf/scheduler_test.go

@@ -162,8 +162,12 @@ func schedulePods(config *testConfig) int32 {
 		// return the worst-case-scenario interval that was seen during this time.
 		// Note this should never be low due to cold-start, so allow bake in sched time if necessary.
 		if len(scheduled) >= config.numPods {
+			consumed := int(time.Since(start) / time.Second)
+			if consumed <= 0 {
+				consumed = 1
+			}
 			fmt.Printf("Scheduled %v Pods in %v seconds (%v per second on average). min QPS was %v\n",
-				config.numPods, int(time.Since(start)/time.Second), config.numPods/int(time.Since(start)/time.Second), minQps)
+				config.numPods, consumed, config.numPods/consumed, minQps)
 			return minQps
 		}