org.apache.brooklyn.test.performance

Class PerformanceMeasurer

java.lang.Object

org.apache.brooklyn.test.performance.PerformanceMeasurer

@Beta
public class PerformanceMeasurer
extends Object

For running simplistic performance tests, to measure the number of operations per second. With a short run, this is "good enough" for eye-balling performance, to spot if it goes horrendously wrong. However, good performance measurement involves much more warm up (e.g. to ensure java HotSpot optimisation have been applied), and running the test for a reasonable length of time. Longevity tests are also important for to check if object creation is going to kill performance in the long-term, etc.

Constructor Summary

Constructors

Constructor and Description
PerformanceMeasurer()

Method Summary

Modifier and Type	Method and Description
static PerformanceTestResult	run(PerformanceTestDescriptor options) Runs a performance test.
protected static void	runConcurrentAndBlock(com.google.common.util.concurrent.ListeningExecutorService executor, Runnable job, int numConcurrentJobs)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PerformanceMeasurer

public PerformanceMeasurer()

Method Detail

run

public static PerformanceTestResult run(PerformanceTestDescriptor options)

Runs a performance test. Repeatedly executes the given job. It measuring either the time it takes for many iterations, or the number of iterations it can execute in a fixed time.

runConcurrentAndBlock

protected static void runConcurrentAndBlock(com.google.common.util.concurrent.ListeningExecutorService executor,
                                            Runnable job,
                                            int numConcurrentJobs)
                                     throws InterruptedException,
                                            ExecutionException

Throws:

InterruptedException

ExecutionException