Merge pull request #192 from voider1/cpu-widget-performance

Improving performance of CPU widget

cpu-widget/cpu-widget.lua

@@ -139,7 +139,7 @@ local function worker(args)
     local cpu_widget = wibox.container.margin(wibox.container.mirror(cpugraph_widget, { horizontal = true }), 0, 0, 0, 2)
 
     local cpus = {}
-    watch([[bash -c "cat /proc/stat | grep '^cpu.' ; ps -eo '%p|%c|%C|' -o "%mem" -o '|%a' --sort=-%cpu | head -11 | tail -n +2"]], timeout,
+    watch([[bash -c "grep '^cpu.' /proc/stat; ps -eo '%p|%c|%C|' -o "%mem" -o '|%a' --sort=-%cpu | head -11 | tail -n +2"]], timeout,
             function(widget, stdout)
                 local i = 1
                 local j = 1