diff --git a/readme.md b/readme.md
index e728075..924cd07 100644
--- a/readme.md
+++ b/readme.md
@@ -44,6 +44,7 @@ As a computer expert, we want to be more efficient and do our jobs better. We kn
 1. [search for a text](#search-for-a-text)
 1. [view an image](#view-an-image)
 1. [show disk size](#show-disk-size)
+1. [check performance of your computer](#check-performance-of-your-computer)
 1. [Quick tips](#quick-tips)
 1. [Hotkeys](#hotkeys)
 
@@ -322,6 +323,14 @@ imgcat image.png
 df -h
 ```
 
+## check performance of your computer
+
+**STOP OPENING YOUR ACTIVITY MONITOR OR TASK MANAGER** :-1:
+
+```shell
+top
+```
+
 ## Quick tips
 
 ![CLI tips](./cli_tips.jpg)