Was the issue, where the drops and marks did not seem to occur, resolved?
On 5/26/2016 8:33 AM, Jonathan Morton wrote:
On 24 May, 2016, at 18:52, Dave Täht <d...@taht.net> wrote:
My last attempts with cake the way it was had it performing miserably at
longer RTTs (try 50ms) vs codel or fq-codel - as in half the throughput
achieved by codel, at that RTT.
There’s definitely something weird going on - as if the marks and drops
reported by the stats are not actually occurring, except for the drops on queue
overflow.
Testing 50:1 flows on 1:10 bandwidth, for example, the single flow is stuck
below the aggregate throughput of the 50, suggesting strongly that its acks are
not being thinned. Cake used to be best-in-class on that very test.
I will investigate further. But the solution may be to just perform the
refactoring necessary to cleanly integrate COBALT, and eliminate subtle bugs by
dint of simply sweeping away some unnecessarily gnarly code. I think COBALT’s
API is probably a lot easier to integrate into a complex qdisc than Codel’s.
- Jonathan Morton
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