I remember when I first started in the industry how difficult performance management was, especially in the area of memory. The good news was IBM provided clear defined service levels in regards to memory pools.

I’m not sure what year I discovered the guidelines, maybe in the 1980s, but I do remember that the published guidelines were so easy. In fact, I can still see the faded yellow sticky note on my desk with the following guidelines.

After managing the box for years and attending numerous performance sessions and the like, I discovered the guidelines were not only not talked