I'm wondering what advice people have for benchmarking a tile server?
Specifically, I'm running a TMS using TileLite, and Vector Tiles using TileStache. Both are running under Ubuntu Server 10.10 / Apache2 / mod_wsgi, using different virtual hosts. Both are pulling data stored in PostGIS, and are caching to disk. I'm displaying these tiles using Polymaps.
I'm interested in establishing a benchmark for TileLite and TileStache, then exploring options for increasing their performance/reliability.
I've tried out using ab on static (individual tiles), but I'm unsure how to simulate a user interacting with the map, causing numerous tiles to be rendered.
Anyways, any tips or sharing of experiences that people have had would be greatly appreciated!
N.B. Apparently I can't create new tags like 'TMS' or 'Apache2' because I'm too new to the forum :(