[Ecn-sane] rfc3168 sec 6.1.2

[Jeremy Harris]

On 29/08/2019 14:51, Dave Taht wrote:
> On Thu, Aug 29, 2019 at 1:02 AM Jonathan Morton <chromatix99 at gmail.com> wrote:
>>
>>> On 29 Aug, 2019, at 5:08 am, Dave Taht <dave.taht at gmail.com> wrote:
>>>
>>> It would explain a lot if this was not actually implemented in Linux.
>>> I'm afraid to look. cwnd reduction is capped to 2. 1 should put you
>>> in quickack mode AND to go lower seemingly it's supposed to
>>> then rely on the retransmit timer.
>>
>> Nowadays the same effect can be obtained from the pacing timer.  Just set the CA scale factor to 50% to get an effective minimum cwnd of 1, or lower still if needed.
> 
> But that wouldn't trigger quickacks from the other side unless it's cwnd 1?

I've also seen suggestion of reducing the effective MSS for the
duration of really-low-cwnd.  Any comments on that?

-- 
Cheers,
  Jeremy