I am interested in the idea of adding some kind of resource limits to plan9. If they existsed I would probably open it up to external users, however different things would worry me:
CPU use Implement the Fair share scheduler User memory Working swap would do me to fix this, but sadly rlimits would probably be easier to implement. Network bandwidth Again a FSS type algorithm delaying or dropping packets could rate control the network well I think. Dialing remote ports I don't become a spam relay so some restriction must be in place, I guess this would require a minor modification to the IP stack. Fork bombs Erik's mod would help, but add a seccond threshold where after 15 secconds you kill the proc failed the most fork() calls - the danger here is a spam storm may cause listen(1) to be killed. Running out of kernel memory I don't perceive this as a problem, though this could be my lack of vision. My 2ยข worth. -Steve
