Performance Monitor or PerfMon (perfmon.exe), has been part of Windows for over 25 years. It has been a valuable tool for server admins, giving in-depth insight into the performance of our servers. When something was slow or broken, the way to start troubleshooting was with PerfMon and performance counters.
A few days ago, I was at Microsoft Ignite 2019 where they announced a new, reimagined Performance Monitor. Along with some new features, it got a nice facelift! For those of you who use it often, you know it is a great tool, but the classic user interface hasn’t changed very much in a long time. Many admins found it difficult to work with and time-consuming to learn. But, it always gives me a little nostalgic grin when I open it up. Go ahead, launch perfmon.exe, and take a trip back in time.