public static void main(String... ignored) throws InterruptedException {
AffinityLock al = AffinityLock.acquireLock();
// warmup.
new MicroJitterSampler().sample(1000 * 1000 * 1000);
MicroJitterSampler microJitterSampler = new MicroJitterSampler();
while (!Thread.currentThread().isInterrupted()) {
if (UTIL >= 100) {
microJitterSampler.sample(30L * 1000 * 1000 * 1000);
} else {
long sampleLength = (long) ((1 / (1 - UTIL / 100) - 1) * 1000 * 1000);
for (int i = 0; i < 30 * 1000; i += 2) {
microJitterSampler.sample(sampleLength);
//noinspection BusyWait
Thread.sleep(1);
}
}
microJitterSampler.print(System.out);
}
}
// TODO test passes but is under development.
public static void main(String... ignored) throws IOException {
AffinityLock lock = AffinityLock.acquireCore();
File file = File.createTempFile("testCHMLatency", "deleteme");
// File file = new File("testCHMLatency.deleteme");
file.delete();
ChronicleMap<LongValue, LongValue> countersMap =
ChronicleMapBuilder.of(LongValue.class, LongValue.class)
.entries(KEYS)
.createPersistedTo(file);
// add keys
LongValue key = Values.newHeapInstance(LongValue.class);
LongValue value = Values.newNativeReference(LongValue.class);
for (long i = 0; i < KEYS; i++) {
key.setValue(i);
countersMap.acquireUsing(key, value);
value.setValue(0);
}
System.out.println("Keys created");
// Monitor monitor = new Monitor();
LongValue value2 = Values.newNativeReference(LongValue.class);
for (int t = 0; t < 5; t++) {
for (int rate :
new int[] {
2 * 1000 * 1000, 1000 * 1000, 500 * 1000 /*, 250 * 1000, 100 * 1000, 50 * 1000*/
}) {
Histogram times = new Histogram();
int u = 0;
long start = System.nanoTime();
long delay = 1000 * 1000 * 1000L / rate;
long next = start + delay;
for (long j = 0; j < RUN_TIME * rate; j += KEYS) {
int stride = Math.max(1, KEYS / (RUN_TIME * rate));
// the timed part
for (int i = 0; i < KEYS && u < RUN_TIME * rate; i += stride) {
// busy wait for next time.
while (System.nanoTime() < next - 12) ;
// monitor.sample = System.nanoTime();
long start0 = next;
// start the update.
key.setValue(i);
LongValue using = countersMap.getUsing(key, value2);
if (using == null) assertNotNull(using);
value2.addAtomicValue(1);
// calculate the time using the time it should have started, not when it was able.
long elapse = System.nanoTime() - start0;
times.sample(elapse);
next += delay;
}
// monitor.sample = Long.MAX_VALUE;
}
System.out.printf("run %d %,9d : ", t, rate);
times.printPercentiles(" micro-seconds.");
}
System.out.println();
}
// monitor.running = false;
countersMap.close();
file.delete();
}