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8346875: Test jdk/jdk/jfr/event/os/TestCPULoad.java fails on macOS

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Reviewed-by: egahlin
This commit is contained in:
Matthias Baesken 2025-01-17 07:58:52 +00:00
parent 398a580518
commit a3eef6c241
1 changed files with 22 additions and 4 deletions
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26
test/jdk/jdk/jfr/event/os/TestCPULoad.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -30,7 +30,6 @@ import jdk.jfr.consumer.RecordedEvent;
import jdk.test.lib.jfr.EventNames;
import jdk.test.lib.jfr.Events;
/**
* @test
* @key jfr
@ -41,13 +40,32 @@ import jdk.test.lib.jfr.Events;
public class TestCPULoad {
private final static String EVENT_NAME = EventNames.CPULoad;
public static boolean isPrime(int num) {
if (num <= 1) return false;
for (int i = 2; i <= Math.sqrt(num); i++) {
if (num % i == 0) return false;
}
return true;
}
public static int burnCpuCycles(int limit) {
int primeCount = 0;
for (int i = 2; i < limit; i++) {
if (isPrime(i)) {
primeCount++;
}
}
return primeCount;
}
public static void main(String[] args) throws Throwable {
Recording recording = new Recording();
recording.enable(EVENT_NAME);
recording.start();
// Need to sleep so a time delta can be calculated
Thread.sleep(100);
// burn some cycles to check increase of CPU related counters
int pn = burnCpuCycles(2500000);
recording.stop();
System.out.println("Found " + pn + " primes while burning cycles");
List<RecordedEvent> events = Events.fromRecording(recording);
if (events.isEmpty()) {