[Cake] Getting Cake to work better with Steam and similar applications

Benjamin Cronce bcronce at gmail.com
Tue Apr 25 18:33:38 EDT 2017

What's your RTT(ping) to the different services, like Steam and Windows
Update? Some ISPs have local CDNs that can give incredibly low latency
relative to the provisioned bandwidth, which can cause bad things to happen
with TCP.

On Tue, Apr 25, 2017 at 3:44 PM, Dendari Marini <dendari92 at gmail.com> wrote:

> On 25 April 2017 at 21:10, Jonathan Morton <chromatix99 at gmail.com> wrote:
>> You may see some improvement from wholesale reducing the inbound
>> bandwidth, to say 10Mbit.  This is especially true given the high asymmetry
>> of your connection, which might require dropped acks upstream to keep
>> filled downstream - and dropped acks will tend to increase burstiness of
>> sending on unpaced senders.
>> You should also try to ensure ECN is fully enabled on your LAN hosts,
>> especially the ones running Steam.  This will help to reduce
>> retransmissions and loss-recovery cycles.
>>  - Jonathan Morton
> Well, the only improvement I've seen when limiting the bandwidth with
> Steam has been at lower than 1Mbps, don't think I want to go that far. In
> all honesty I wouldn't limit it to 10Mbit either, with the overhead it
> means half of my total bandwidth, not a trade-off I'm willing to do.
> Still, the issue is real and it seems Steam is the only application I can
> reproduce it. I've seen reports about Battle.net and Windows Updates doing
> the same thing (because they should open multiple concurrent connections),
> but I can't reproduce it, at least not in the way Steam does.
> Anyway I'm gonna take a "pause" from all of this, I've wasted the last
> three weeks ago just for trying resolving it but unfortunately still
> nothing. Thanks all for your help, if there's any news I'll report it here.
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