How many "passive, common, server-like tasks" can a single home-used RPi perform in parallel? There are many things you can have a RPi serving, like a NAS, a webserver (PHP+SQL), a git repository, a media server, a WLAN access point, ...
But how many of them can a single home-used Raspberry Pi B serve in parallel? Assuming: up-to-date Raspbian and firmware with SSH-only access (GUI disabled fully) and optimized settings like cleaned off of unneeded packages, overclocked, only 16 MB VRAM, fast SD card and so on.
I know this heavily depends on the actual usage and the concrete setup, but are there some general statements that always hold?
What server applications definitely need their own RPi and would suffer if other tasks would run on the same RPi?
What tasks are there that use almost no power and can run parallel on the same RPi?
Example use case:
- Network server: WLAN access point, webserver (PHP+SQL), git repository for one or two handful of people