Setting JVM opts

Author: Suszyński Krzysztof

src/test/java/pl/wavesoftware/eid/exceptions/EidIT.java

@@ -1,14 +1,10 @@
 package pl.wavesoftware.eid.exceptions;
 
-import org.junit.Before;
 import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.rules.RuleChain;
 import org.openjdk.jmh.annotations.Benchmark;
 import org.openjdk.jmh.annotations.Mode;
-import org.openjdk.jmh.annotations.Scope;
-import org.openjdk.jmh.annotations.Setup;
-import org.openjdk.jmh.annotations.State;
 import org.openjdk.jmh.infra.Blackhole;
 import org.openjdk.jmh.results.RunResult;
 import org.openjdk.jmh.runner.Runner;
@@ -20,7 +16,6 @@
 import pl.wavesoftware.testing.JavaAgentSkip;
 import pl.wavesoftware.testing.JmhCleaner;
 
-import java.text.NumberFormat;
 import java.util.Collection;
 import java.util.Date;
 import java.util.concurrent.TimeUnit;
@@ -43,26 +38,6 @@ public class EidIT {
         .outerRule(new JmhCleaner(EidIT.class))
         .around(JavaAgentSkip.ifActive());
 
-    @Before
-    public void before() {
-        printMemory();
-    }
-
-    public static void printMemory() {
-        Runtime runtime = Runtime.getRuntime();
-
-        NumberFormat format = NumberFormat.getInstance();
-
-        long maxMemory = runtime.maxMemory();
-        long allocatedMemory = runtime.totalMemory();
-        long freeMemory = runtime.freeMemory();
-
-        LOG.info("free memory: {} KiB", format.format(freeMemory / 1024));
-        LOG.info("allocated memory: {} KiB", format.format(allocatedMemory / 1024));
-        LOG.info("max memory: {} KiB", format.format(maxMemory / 1024));
-        LOG.info("total free memory: {} KiB", format.format((freeMemory + (maxMemory - allocatedMemory)) / 1024));
-    }
-
     @Test
     public void doBenckmarking() throws Exception {
         Options opt = new OptionsBuilder()
@@ -78,6 +53,7 @@ public void doBenckmarking() throws Exception {
                 .forks(1)
                 .shouldFailOnError(true)
                 .shouldDoGC(true)
+                .jvmArgs("-server", "-Xms256m", "-Xmx256m", "-XX:PermSize=128m", "-XX:MaxPermSize=128m", "-XX:+UseParallelGC")
                 .build();
 
         Runner runner = new Runner(opt);
@@ -98,35 +74,24 @@ public void doBenckmarking() throws Exception {
 
         double eidTimes = eidScore / controlScore;
 
-        LOG.info(String.format("Control sample method time per operation: %.2f µsec", controlScore));
-        LOG.info(String.format("#eid() method time per operation:         %.2f µsec", eidScore));
+        LOG.info(String.format("Control sample method time per operation: %.2f ops / µsec", controlScore));
+        LOG.info(String.format("#eid() method time per operation:         %.2f ops / µsec", eidScore));
         LOG.info(String.format("%s and is %.2f%%", eidTitle, eidTimes * PERCENT));
 
         assertThat(eidTimes).as(eidTitle).isGreaterThanOrEqualTo(SPEED_THRESHOLD);
     }
 
-    @State(Scope.Benchmark)
-    public static class MemoryState {
-        private String eid;
-
-        @Setup
-        public void setup() {
-            printMemory();
-            this.eid = "20160330:124244";
-        }
-    }
-
     @Benchmark
-    public void control(MemoryState state, Blackhole bh) {
+    public void control(Blackhole bh) {
         for (int i = 0; i < OPERATIONS; i++) {
             bh.consume(new Date());
         }
     }
 
     @Benchmark
-    public void eid(MemoryState state, Blackhole bh) {
+    public void eid(Blackhole bh) {
         for (int i = 0; i < OPERATIONS; i++) {
-            bh.consume(new Eid(state.eid));
+            bh.consume(new Eid("20160330:144947"));
         }
     }
 

src/test/java/pl/wavesoftware/eid/utils/EidPreconditionsIT.java

@@ -62,6 +62,7 @@ public void doBenchmarking() throws RunnerException {
             .forks(1)
             .shouldFailOnError(true)
             .shouldDoGC(true)
+            .jvmArgs("-server", "-Xms256m", "-Xmx256m", "-XX:PermSize=128m", "-XX:MaxPermSize=128m", "-XX:+UseParallelGC")
             .build();
 
         Runner runner = new Runner(opt);