Nice tutorial. I do performance work and the only tools really necessary as I found are sar, ps, and munging thorugh /proc for nfs data.

At a company I did a study to prove to a customer how light weight sar was and stated it was the cost of one particular heavy weight transaction. The person who was not a fan said “ha”. I said one transaction across 100 servers for the entire day, how many transactions do we do now in a day (tens of millions) ….

shoot and score!

Great write up and examples dude!

Lover of people, Texas Feminist Liberal Democrat, Horse Farm, High Tech Gadget ENFP Guy, and someone who appreciates the struggle of women and wants to help.