diff --git a/plugins/webstats/lua/webstats_common.lua b/plugins/webstats/lua/webstats_common.lua
index 1ba56dcdd..8858a55eb 100644
--- a/plugins/webstats/lua/webstats_common.lua
+++ b/plugins/webstats/lua/webstats_common.lua
@@ -45,6 +45,7 @@ end
 function _M.getInstance(self)
     if rawget(self, "instance") == nil then
         rawset(self, "instance", self.new())
+        self.cron()
     end
     assert(self.instance ~= nil)
     return self.instance
@@ -474,8 +475,7 @@ function _M.cron(self)
         ngx.update_time()
         -- self:D("PID:"..tostring(ngx.worker.id()).."--【"..tostring(llen).."】, elapsed: " .. tostring(ngx.now() - begin))
     end
-
-    ngx.timer.every(1, timer_every_get_data)
+    ngx.timer.every(0.5, timer_every_get_data)
 end
 
 
diff --git a/plugins/webstats/lua/webstats_worker.lua b/plugins/webstats/lua/webstats_worker.lua
index 2eda941e6..53a4b0d8c 100644
--- a/plugins/webstats/lua/webstats_worker.lua
+++ b/plugins/webstats/lua/webstats_worker.lua
@@ -17,5 +17,4 @@ end
 
 if ngx.worker.id() == 0 then
     ngx.timer.every(60, webstats_cron_pre)
-    WS_C:cron()
 end
\ No newline at end of file