Having a system for collecting performance statistics can be extremely useful. In the past, I've used Munin for this, and it has been invaluable in analyzing bottlenecks and various other issues. I ...
I have an app running on rackspace cloud (ubuntu 10.04). For some reason, over the last 3 nights, the memory has been spiking and then leveling off for about 7 hours before eventually falling off. ...