Added another baseline benchmark against StringUtils.split() from commons-lang

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1658392 13f79535-47bb-0310-9956-ffa450edef68

Author: ebourg

pom.xml

@@ -431,6 +431,12 @@ CSV files of various types.
           <scope>system</scope>
           <systemPath>${basedir}/csv-1.0.jar</systemPath>
         </dependency>
+        
+        <dependency>
+          <groupId>org.apache.commons</groupId>
+          <artifactId>commons-lang3</artifactId>
+          <version>3.2.1</version>
+        </dependency>
       </dependencies>
 
       <properties>

src/test/java/org/apache/commons/csv/CSVBenchmark.java

@@ -24,6 +24,7 @@
 import java.util.concurrent.TimeUnit;
 
 import com.generationjava.io.CsvReader;
+import org.apache.commons.lang3.StringUtils;
 import org.openjdk.jmh.annotations.Benchmark;
 import org.openjdk.jmh.annotations.BenchmarkMode;
 import org.openjdk.jmh.annotations.Fork;
@@ -39,8 +40,8 @@
 @BenchmarkMode(Mode.AverageTime)
 @Fork(value = 1, jvmArgs = "-server")
 @Threads(1)
-@Warmup(iterations = 10)
-@Measurement(iterations = 10)
+@Warmup(iterations = 5)
+@Measurement(iterations = 20)
 @OutputTimeUnit(TimeUnit.MILLISECONDS)
 public class CSVBenchmark {
 
@@ -49,7 +50,7 @@ private BufferedReader getReader() throws IOException {
     }
 
     @Benchmark
-    public int baseline(Blackhole bh) throws Exception {
+    public int read(Blackhole bh) throws Exception {
         BufferedReader in = getReader();
         int count = 0;
         String line;
@@ -62,6 +63,21 @@ public int baseline(Blackhole bh) throws Exception {
         return count;
     }
 
+    @Benchmark
+    public int split(Blackhole bh) throws Exception {
+        BufferedReader in = getReader();
+        int count = 0;
+        String line;
+        while ((line = in.readLine()) != null) {
+            String[] values = StringUtils.split(line, ',');
+            count += values.length;
+        }
+        
+        bh.consume(count);
+        in.close();
+        return count;
+    }
+
     @Benchmark
     public int parseCommonsCSV(Blackhole bh) throws Exception {
         BufferedReader in = getReader();