[Cake] Long-RTT broken again

Dave Taht dave.taht at gmail.com
Sat Nov 7 00:16:19 EST 2015

I note that truesize is a bad indicator for tests on the rx path where
acks are usually 2k.
Dave Täht
Let's go make home routers and wifi faster! With better software!

On Sat, Nov 7, 2015 at 12:02 AM, Jonathan Morton <chromatix99 at gmail.com> wrote:
>> On 6 Nov, 2015, at 16:15, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
>> Added a run with Reno to the same directory. Smoother, but worse overall
>> throughput.
> Yes, looks like it’s ramping up the slow way, and hasn’t reached the BDP by the time the test run ended.
> However, it also looks like it’s properly ack-clocked, unlike CUBIC, so while it’s still bursty, it isn’t overflowing the buffer except during slow-start.
> The fact that slow-start terminates (due to loss) after only a few RTTs is suspicious.  What parameters are you giving to netem?  I note that the default packet limit in netem is 1000, which is 1.5MB...
>  - Jonathan Morton
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