802.11 acks are packet or ampdu driven while tcp, being a byte protocol,
acks bytes. Aligning these may not be straightforward. We test with
different read() rates on the wifi clients as TCP is supposed to flow
control the source's writes() as well. Wifi clients are starting to align
their sleep
>> It does increase single-flow TCP throughput by up to a factor of two,
>> though... Which everyone knows is the most important benchmark number ;)
> Were you always as cynical as I am?
(Giggle)
Dave, you've always underestimated Toke ;-)
___
Bloat ma
On Fri, Dec 1, 2017 at 10:57 AM, Luca Muscariello
wrote:
> https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-3700-series/white-paper-c11-735947.html
>
Good news all over. I wonder what happens on cisco against the suite
of tests toke made available here:
https://www.cs.kau.se/to
https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-3700-series/white-paper-c11-735947.html
On Fri 1 Dec 2017 at 19:43, Dave Taht wrote:
> Luca Muscariello writes:
>
> > For highly asymmetric links, but also shared media like wifi, QUIC might
> be a
> > better playground for opt
Luca Muscariello writes:
> For highly asymmetric links, but also shared media like wifi, QUIC might be a
> better playground for optimisations.
> Not pervasive as TCP though and maybe off topic in this thread.
I happen to really like QUIC, but a netperf-style tool did not exist for
it when I las
Toke Høiland-Jørgensen writes:
> Luca Muscariello writes:
>
>> If I understand the text right, FastACK runs in the AP and generates an ACK
>> on behalf (or despite) of the TCP client end.
>> Then, it decimates dupACKs.
>>
>> This means that there is a stateful connection tracker in the AP. Not s
If so, that's a step in the right direction. I know of a few "old guard"
protocols which typically use appropriate DSCPs too.
But YouTube doesn't, and neither do any of the major BitTorrent
implementations (despite us asking nicely), nor typical VoIP clients, nor
multiplayer games. Those are the
Luca Muscariello writes:
> If I understand the text right, FastACK runs in the AP and generates an ACK
> on behalf (or despite) of the TCP client end.
> Then, it decimates dupACKs.
>
> This means that there is a stateful connection tracker in the AP. Not so
> simple.
> It's almost, not entirely t
I think only IPSEC would be a problem for fastACK but not TLS.
On Fri, Dec 1, 2017 at 2:13 PM, Кирилл Луконин wrote:
> As I noticed from the Meraki document:
>
> "FastACK also relies on packet inspection, and will not work when
> payload is encrypted. However, in our networks, we do not currentl
If I understand the text right, FastACK runs in the AP and generates an ACK
on behalf (or despite) of the TCP client end.
Then, it decimates dupACKs.
This means that there is a stateful connection tracker in the AP. Not so
simple.
It's almost, not entirely though, a TCP proxy doing Split TCP.
On
Jan Ceuleers writes:
> On 01/12/17 01:28, David Lang wrote:
>> Stop thinking in terms of single-flow benchmarks and near idle
>> 'upstream' paths.
>
> Nobody has said it so I will: on wifi-connected endpoints the upstream
> acks also compete for airtime with the downstream flow.
There's a relate
For highly asymmetric links, but also shared media like wifi, QUIC might be
a better playground for optimisations.
Not pervasive as TCP though and maybe off topic in this thread.
If the downlink is what one want to optimise, using FEC in the downstream,
in conjunction with flow control could be ve
I thought that some browsers already use various DSCPs when running WebRTC?
> On Nov 30, 2017, at 9:09 PM, Jonathan Morton wrote:
>
> Cake already supports treating CS1 as less-than-besteffort by default.
> Adding more codepoints to that list is easy.
>
> The trick is getting applications to
Hi All,
you do realize that the worst case is going to stay at 35KPPS? If we assume
simply that the 100Mbps download rate is not created by a single flow but by
many flows (say 70K flows) the discussed ACK frequency reduction schemes will
not work that well. So ACK thinning is a nice optimizati
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