Recently I’ve been dealing with CPU RDY of about 5% across two ESXi hosts. I’ve load balanced the best I could given necessary workloads and was able to get CPU RDY down to about 3-4% which still isn’t great. I made the decision to grab a few Intel Xeon X7560 processors to replace the existing Intel Xeon E7540 processors to help alleviate some pressure. The main reason was moving from 6 core E7540 to 8 core X7560.
Here’s an ESXi console script to loop through each Nimble eui.* adapter and set IOPS=0 and BYTES=0 (per Nimble recommendations).
In order to work around the issue processor power management has to be disabled in system UEFI and vSphere Client.
A quick Powershell script I hacked together that will enumerate all Active Directory users, and build an XML file for an application I wrote that generates user reports for a specific application.
There are numerous ways to accomplish getting the PID for an established network connection in AIX and Linux using tools like ss or more popular lsof. In my situation, the system I was working on did not have ss or lsof, so I used netstat and rmsock.