monitor Linux performance
 

Is there a useful utility to show health of Linux system? (monitor Linux performance, various reports, CPU usage, memory usage, Swap Memory, Cache Size,Buffer Size, drive health, etc)

Linuxquestions.org offers two features you may want to try. First one is called "Search" (https://www.linuxquestions.org/questions/search.php) which allows you to tap into years of amassed practical knowledge by fellow LQ members. Also, at the bottom of this page you'll find the "Similar Threads" feature. While limited to keywords it clearly shows you leads in relation to your thread title. I suggest you search for threads about monitoring, see if the solutions offered fit your requirements and if not ask more specific questions. Does that work for you?