diff --git a/gnes/client/cli.py b/gnes/client/cli.py
index aaf00ed9..2cda73d2 100644
--- a/gnes/client/cli.py
+++ b/gnes/client/cli.py
@@ -111,7 +111,7 @@ def update(self):
                 num_bytes / elapsed,
                 self.num_batch / elapsed,
                 estleft_str,
-                (self.total_batch - self.num_batch) / (self.num_batch + 0.0001 / elapsed)
+                (self.total_batch - self.num_batch) / ((self.num_batch + 0.0001) / elapsed)
             ))
         sys.stdout.flush()
 
diff --git a/gnes/client/http.py b/gnes/client/http.py
index 2cde567f..c41fcedc 100644
--- a/gnes/client/http.py
+++ b/gnes/client/http.py
@@ -48,20 +48,20 @@ async def general_handler(request, parser, *args, **kwargs):
                 post_data = await request.post()
                 if 'query' in post_data.keys():
                     _file = post_data.get('query')
-                    self.logger.info("query request from input file: %s" % _file.filename)
+                    self.logger.info('query request from input file: %s' % _file.filename)
                     data['query'] = _file.file.read()
                 elif 'docs' in post_data.keys():
-                    files = post_data.getall("docs")
-                    self.logger.info("index request from input files: %d files" % len(files))
+                    files = post_data.getall('docs')
+                    self.logger.info('index request from input files: %d files' % len(files))
                     data['docs'] = [_file.file.read() for _file in files]
 
-                self.logger.info('data received, beigin processing')
+                self.logger.info('data received')
                 resp = await loop.run_in_executor(
                     executor,
                     stub_call,
                     parser([d for d in data.get('docs')] if hasattr(data, 'docs')
                            else data.get('query'), *args, **kwargs))
-                self.logger.info('handling finished, will send to user')
+                self.logger.info('send back to user')
                 return web.Response(body=json.dumps({'result': resp, 'meta': None}, ensure_ascii=False),
                                     status=200,
                                     content_type='application/json')
@@ -85,7 +85,7 @@ async def init(loop):
             srv = await loop.create_server(app.make_handler(),
                                            self.args.http_host,
                                            self.args.http_port)
-            self.logger.info('http server listens to %s:%d ...' % (self.args.http_host, self.args.http_port))
+            self.logger.info('http server listens at %s:%d' % (self.args.http_host, self.args.http_port))
             return srv
 
         def stub_call(req):