Your conmparison is invalid: | public void testPutString() throws Exception | { | ChannelBufferWrapper buffer = new ChannelBufferWrapper(10 * 1024); | | for (int c = 0; c < TIMES; c++) | { | long start = System.currentTimeMillis(); | | for (int i = 0; i < numberOfIteractions; i++) | { | if (i == 10000) | { | start = System.currentTimeMillis(); | } | buffer.rewind(); | buffer.putString(str + i); | } | | long spentTime = System.currentTimeMillis() - start; | | System.out.println("spentTime putString = " + spentTime); | } | | } | You are adding the integer i to the string in some of the tests. These will cause a new string and a copy. You're not doing that when you're testing with SimpleString View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4211751#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...