I run 15 separate installations of WordPress 3.0.1. On Sep. 9, my memory usage more than tripled and has stayed there ever since. Observe:
I thought this issue might be a consequence of a plugin or two that I updated, but I’ve tried downgrading each plugin in turn and have seen no resultant decrease in memory usage. Rebooting the server has also had no effect on this resource.
Is there a good way to diagnose what’s causing this memory surge, or does anyone have any suggestions of what I might do to resolve it?