The EFF launches a router project
The EFF launches a router project
Posted Jul 30, 2014 2:31 UTC (Wed) by mtaht (subscriber, #11087)In reply to: The EFF launches a router project by dlang
Parent article: The EFF launches a router project
I need to point out there is nearly zero cpu impact of the new queue management stuff, be it aqm or fair queuing. There are even beneficial cache effects from keeping the queues shorter with BQL, also -
the real killer for cpu is the cost software rate limiting, which accounts for like 82% of the overhead before a box flatlines. (I confirm the peak forwarding rate for the wndr3800 appears to be about 330mbit/sec with no iptables rules using fq_codel on the ethernet device, and about 50mbit with software rate limiting)
I'd like to come up with a better rate limiter, and feel that hardware assistance is going to be needed with the current generation of arm router based products as well.