[jbosscache-commits] JBoss Cache SVN: r6908 - core/branches/flat/src/test/java/org/jboss/starobrno/profiling.

Author: manik.surtani(a)jboss.com Date: 2008-10-13 09:32:12 -0400 (Mon, 13 Oct 2008) New Revision: 6908 Added: core/branches/flat/src/test/java/org/jboss/starobrno/profiling/AbstractProfileTest.java core/branches/flat/src/test/java/org/jboss/starobrno/profiling/ProfileTest.java Log: Added profiler tests Added: core/branches/flat/src/test/java/org/jboss/starobrno/profiling/AbstractProfileTest.java =================================================================== --- core/branches/flat/src/test/java/org/jboss/starobrno/profiling/AbstractProfileTest.java (rev 0) +++ core/branches/flat/src/test/java/org/jboss/starobrno/profiling/AbstractProfileTest.java 2008-10-13 13:32:12 UTC (rev 6908) @@ -0,0 +1,31 @@ +package org.jboss.starobrno.profiling; + +import org.jboss.cache.DefaultCacheFactory; +import org.jboss.starobrno.Cache; +import org.jboss.starobrno.config.Configuration; +import org.jboss.starobrno.util.TestingUtil; +import org.testng.annotations.AfterTest; +import org.testng.annotations.BeforeTest; +import org.testng.annotations.Test; + +import java.util.Map; + +@Test(groups = "profiling") +public abstract class AbstractProfileTest +{ + protected Map cache; + + @BeforeTest + public void setUp() + { + Configuration cfg = new Configuration(); + cache = new DefaultCacheFactory().createCache(cfg, false); + } + + @AfterTest + public void tearDown() + { + TestingUtil.killCaches((Cache) cache); + cache = null; + } +} Added: core/branches/flat/src/test/java/org/jboss/starobrno/profiling/ProfileTest.java =================================================================== --- core/branches/flat/src/test/java/org/jboss/starobrno/profiling/ProfileTest.java (rev 0) +++ core/branches/flat/src/test/java/org/jboss/starobrno/profiling/ProfileTest.java 2008-10-13 13:32:12 UTC (rev 6908) @@ -0,0 +1,311 @@ +package org.jboss.starobrno.profiling; + +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; +import org.jboss.cache.lock.IsolationLevel; +import org.jboss.starobrno.Cache; +import org.jboss.starobrno.config.Configuration; +import org.jboss.starobrno.util.TestingUtil; +import org.testng.annotations.Test; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import java.util.Random; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicLong; + +/** + * Test to use with a profiler to profile replication. To be used in conjunction with ProfileSlaveTest. + * <p/> + * Typical usage pattern: + * <p/> + * 1. Start a single test method in ProfileSlaveTest. This will block until you kill it. + * 2. Start the corresponding test in this class, with the same name, in a different JVM, and attached to a profiler. + * 3. Profile away! + * <p/> + * + * @author Manik Surtani (<a href="mailto:manik@jboss.org">manik@jboss.org</a>) + * @since 2.1.0 + */ +@Test(groups = "profiling") +public class ProfileTest extends AbstractProfileTest +{ + /* + Test configuration options + */ + protected static final long NUM_OPERATIONS = 1000000; // DURATION is replaced with a fixed number of operations instead. + protected static final int NUM_THREADS = 25; + protected static final int MAX_RANDOM_SLEEP_MILLIS = 1; + protected static final int MAX_OVERALL_KEYS = 2000; + protected static final int WARMUP_LOOPS = 20000; + protected static final boolean USE_SLEEP = false; // throttle generation a bit + + private List<Object> keys = new ArrayList<Object>(MAX_OVERALL_KEYS); + private Random r = new Random(); + + Log log = LogFactory.getLog(ProfileTest.class); + + @Test(enabled = true) + public void testLocalModePess() throws Exception + { + Cache c = (Cache) cache; + c.getConfiguration().setCacheMode(Configuration.CacheMode.LOCAL); + c.getConfiguration().setConcurrencyLevel(2000); + c.getConfiguration().setIsolationLevel(IsolationLevel.REPEATABLE_READ); + runCompleteTest(); + } + + private void runCompleteTest() throws Exception + { + init(); + startup(); + warmup(); + doTest(); + + // wait for user exit + System.in.read(); + } + + /** + * Thr following test phases can be profiled individually using triggers in JProfiler. + */ + + protected void init() + { + long startTime = System.currentTimeMillis(); + log.warn("Starting init() phase"); + keys.clear(); + for (int i = 0; i < MAX_OVERALL_KEYS; i++) + { + Object key = createRandomKey(r); + while (keys.contains(key)) key = createRandomKey(r); + if (i % 10 == 0) + { + log.warn("Generated " + i + " keys"); + } + keys.add(key); + } + System.gc(); + long duration = System.currentTimeMillis() - startTime; + log.warn("Finished init() phase. " + printDuration(duration)); + } + + private Object createRandomKey(Random r) + { + return Integer.toHexString(r.nextInt(Integer.MAX_VALUE)); + } + + + protected void startup() + { + long startTime = System.currentTimeMillis(); + log.warn("Starting cache"); + ((Cache) cache).start(); + long duration = System.currentTimeMillis() - startTime; + log.warn("Started cache. " + printDuration(duration)); + } + + private void warmup() throws InterruptedException + { + long startTime = System.currentTimeMillis(); + ExecutorService exec = Executors.newFixedThreadPool(NUM_THREADS); + log.warn("Starting warmup"); + // creates all the Fqns since this can be expensive and we don't really want to measure this (for now) + for (final Object key : keys) + { + exec.execute(new Runnable() + { + public void run() + { + // this will create the necessary nodes. + cache.put(key, Collections.emptyMap()); + } + }); + } + + // loop through WARMUP_LOOPS gets and puts for JVM optimisation + for (int i = 0; i < WARMUP_LOOPS; i++) + { + exec.execute(new Runnable() + { + public void run() + { + Object key = keys.get(r.nextInt(MAX_OVERALL_KEYS)); + cache.get(key); + cache.put(key, "Value"); + cache.remove(key); + } + }); + } + + exec.shutdown(); + exec.awaitTermination(360, TimeUnit.SECONDS); + + long duration = System.currentTimeMillis() - startTime; + log.warn("Finished warmup. " + printDuration(duration)); + //cache.removeNode(Fqn.ROOT); + ((Cache) cache).stop(); + + startup(); + } + + private void doTest() throws Exception + { + ExecutorService exec = Executors.newFixedThreadPool(NUM_THREADS); + log.warn("Starting test"); + int i; + long print = NUM_OPERATIONS / 10; + + AtomicLong durationPuts = new AtomicLong(); + AtomicLong durationGets = new AtomicLong(); + AtomicLong durationRemoves = new AtomicLong(); + + long stElapsed = System.nanoTime(); + for (i = 0; i < NUM_OPERATIONS; i++) + { + MyRunnable r = null; + switch (i % 3) + { + case 0: + r = new Putter(i, durationPuts); + break; + case 1: + r = new Getter(i, durationGets); + break; + case 2: + r = new Remover(i, durationRemoves); + break; + } + if (i % print == 0) + log.warn("processing iteration " + i); + exec.execute(r); +// if (USE_SLEEP) TestingUtil.sleepRandom(MAX_RANDOM_SLEEP_MILLIS); + if (USE_SLEEP) TestingUtil.sleepThread(MAX_RANDOM_SLEEP_MILLIS); + } + log.warn("Finished generating runnables; awaiting executor completion"); + // wait for executors to complete! + exec.shutdown(); + while (!exec.awaitTermination(((long) i), TimeUnit.SECONDS)) + { + Thread.sleep(1); + } + + // wait up to 1 sec for each call? + long elapsedTimeNanos = System.nanoTime() - stElapsed; + + log.warn("Finished test. " + printDuration((long) toMillis(elapsedTimeNanos))); + log.warn("Throughput: " + ((double) NUM_OPERATIONS * 1000 / toMillis(elapsedTimeNanos)) + " operations per second (roughly equal numbers of PUT, GET and REMOVE)"); + log.warn("Average GET time: " + printAvg(durationGets.get())); + log.warn("Average PUT time: " + printAvg(durationPuts.get())); + log.warn("Average REMOVE time: " + printAvg(durationRemoves.get())); + } + + private String printAvg(long totalNanos) + { + double nOps = (double) (NUM_OPERATIONS / 3); + double avg = ((double) totalNanos) / nOps; + double avgMicros = avg / 1000; + return avgMicros + " �s"; + } + + private double toMillis(long nanos) + { + return ((double) nanos / (double) 1000000); + } + + enum Mode + { + PUT, GET, REMOVE + } + + private abstract class MyRunnable implements Runnable + { + int id; + Mode mode; + AtomicLong duration; + + public void run() + { + Object key = keys.get(r.nextInt(MAX_OVERALL_KEYS)); + long d = 0, st = 0; + switch (mode) + { + case PUT: + Object value = getRandomString(); + st = System.nanoTime(); + cache.put(key, value); + d = System.nanoTime() - st; + break; + case GET: + st = System.nanoTime(); + cache.get(key); + d = System.nanoTime() - st; + break; + case REMOVE: + st = System.nanoTime(); + cache.remove(key); + d = System.nanoTime() - st; + break; + } + duration.getAndAdd(d); + } + } + + private class Putter extends MyRunnable + { + private Putter(int id, AtomicLong duration) + { + this.id = id; + this.duration = duration; + mode = Mode.PUT; + } + } + + private class Getter extends MyRunnable + { + private Getter(int id, AtomicLong duration) + { + this.id = id; + this.duration = duration; + mode = Mode.GET; + } + } + + private class Remover extends MyRunnable + { + private Remover(int id, AtomicLong duration) + { + this.id = id; + this.duration = duration; + mode = Mode.REMOVE; + } + } + + private String getRandomString() + { + StringBuilder sb = new StringBuilder(); + int len = r.nextInt(10); + + for (int i = 0; i < len; i++) + { + sb.append((char) (63 + r.nextInt(26))); + } + return sb.toString(); + } + + protected String printDuration(long duration) + { + if (duration > 2000) + { + double dSecs = ((double) duration / (double) 1000); + return "Duration: " + dSecs + " seconds"; + } + else + { + return "Duration: " + duration + " millis"; + } + } +}