simple fs bench test

modules/benchmark/micro/src/main/java/org/elasticsearch/benchmark/fs/FsAppendBenchmark.java

@@ -0,0 +1,80 @@
+/*
+ * Licensed to Elastic Search and Shay Banon under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. Elastic Search licenses this
+ * file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.benchmark.fs;
+
+import org.elasticsearch.common.StopWatch;
+import org.elasticsearch.common.unit.ByteSizeValue;
+
+import java.io.File;
+import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+import java.util.Random;
+
+/**
+ * @author kimchy (shay.banon)
+ */
+public class FsAppendBenchmark {
+
+    public static void main(String[] args) throws Exception {
+        new File("work/test.log").delete();
+        RandomAccessFile raf = new RandomAccessFile("work/test.log", "rw");
+        raf.setLength(0);
+
+        boolean CHANNEL = true;
+        int CHUNK = (int) ByteSizeValue.parseBytesSizeValue("1k").bytes();
+        long DATA = ByteSizeValue.parseBytesSizeValue("100mb").bytes();
+
+        byte[] data = new byte[CHUNK];
+        new Random().nextBytes(data);
+
+        StopWatch watch = new StopWatch().start();
+        if (CHANNEL) {
+            FileChannel channel = raf.getChannel();
+            long position = 0;
+            while (position < DATA) {
+                channel.write(ByteBuffer.wrap(data), position);
+                position += data.length;
+            }
+            channel.force(true);
+        } else {
+            long position = 0;
+            while (position < DATA) {
+                raf.write(data);
+                position += data.length;
+            }
+            raf.getFD().sync();
+        }
+        raf.close();
+        watch.stop();
+        System.out.println("Wrote [" + (new ByteSizeValue(DATA)) + "], chunk [" + (new ByteSizeValue(CHUNK)) + "], in " + watch.lastTaskTime());
+    }
+
+    private static final ByteBuffer fill = ByteBuffer.allocateDirect(1);
+
+//    public static long padLogFile(long position, long currentSize, long preAllocSize) throws IOException {
+//        if (position + 4096 >= currentSize) {
+//            currentSize = currentSize + preAllocSize;
+//            fill.position(0);
+//            f.getChannel().write(fill, currentSize - fill.remaining());
+//        }
+//        return currentSize;
+//    }
+}