One of the cool “under the hood” improvements vSphere 5 offers is the sliding scale function of the Mem.MinFreePct. Before diving into the sliding scale function, let’s take a look at the Mem.MinFreePct function itself. MinFreePct determines the amount of memory the VMkernel should keep free. This threshold is subdivided in various memory thresholds, i.e. [...]

Gabe wrote an article about the impact of large pages on the consolidation ratio, I want to make something clear before the wrong conclusions are being made. Large pages will be broken down if memory pressure occurs in the system. If no memory pressure is detected on the host, i.e the demand is lower than [...]

In part 1 of the series of post on the impact of oversized virtual machines NUMA architecture, memory overhead reservation and share levels are reviewed, part 2 zooms in on the impact of memory overhead reservation and share levels on HA and DRS. This part looks at CPU scheduling, memory management and what impact oversized [...]

There seems to be a lot of confusion about this BIOS setting, I receive lots of questions on whether to enable or disable Node interleaving. I guess the term “enable” make people think it some sort of performance enhancement. Unfortunately the opposite is true and it is strongly recommended to keep the default setting and [...]