[Cake] [RFC PATCH 4/5] q_netem: support delivering packets in delayed time slots
dave at taht.net
Tue Nov 21 13:52:57 EST 2017
Pete Heist <peteheist at gmail.com> writes:
> On Nov 19, 2017, at 9:41 PM, Dave Taht <dave at taht.net> wrote:
> Yep with bql. I hadn’t thought about mq before. What my qos setup scripts
> doing though is replacing the root qdisc (which now I see defaults to
> mq) with a
> single cake instance. With bql, should rather be leaving mq and putting
> cake instances underneath it?
> Only if you want unlimited mode, and birthday problems, and don't have
> cpu to burn.
> Ok, if I compare the two, latency under load for rrul_be looks “better”
> (~1-1.5ms instead of ~3ms) with a single “cake unlimited besteffort lan”
> instance instead of four of them underneath mq.
Yep. Adding more unmanaged queues doesn't help. However it should spread
the load across more cpus.
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