diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..ee4b58d
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,3 @@
+2014-08-03 yedongfu dongfuye@163.com
+  * start to work
+  * version 0.1.0
\ No newline at end of file
diff --git a/examples/log-bench.cc b/examples/log-bench.cc
index 0eb011f..4b73fd6 100644
--- a/examples/log-bench.cc
+++ b/examples/log-bench.cc
@@ -8,8 +8,12 @@ using namespace handy;
 
 
 int main(int argc, const char* argv[]) {
-    Logger::getLogger().setFileName("/dev/null");
-    //Logger::getLogger().setRotateInterval(60);
+    const char* filename = "/dev/null";
+    if (argc > 1) {
+        filename = argv[1];
+    }
+    Logger::getLogger().setFileName(filename);
+    Logger::getLogger().setRotateInterval(60);
     time_t last = time(NULL);
     long cn = 0, lastcn = 0;
     for(;;) {