Server mode: the transfer buffer size has been changed from 16 KB to 64 KB,…

Server mode: the transfer buffer size has been changed from 16 KB to 64 KB, after it was found that this improves performance on Linux quite a lot.

h2/src/main/org/h2/value/Transfer.java

@@ -42,7 +42,7 @@ import org.h2.util.Utils;
  */
 public class Transfer {
 
-    private static final int BUFFER_SIZE = 16 * 1024;
+    private static final int BUFFER_SIZE = 64 * 1024;
     private static final int LOB_MAGIC = 0x1234;
     private static final int LOB_MAC_SALT_LENGTH = 16;