• Contact: tech-kern
• Mentors: Christos Zoulas
• Duration estimate: 350h

ALTQ (ALTernate Queueing) is an optional network packet scheduler for BSD systems. It provides various queueing disciplines and other quality of service (QoS) related components required to control resource usage.

It is currently integrated in pf(4) .

Unfortunately it was written a long time ago and it suffers from a lot of code duplication, dangerous code practices and can use improvements both in the API and implementation. After these problems have been addressed it should be integrated with npf(4) .