TCP Congestion Control 2020 review

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Which TPC Congestion Control do you use?
Westwood
60%
 60%  [ 3 ]
Vegas
0%
 0%  [ 0 ]
Bic
0%
 0%  [ 0 ]
CuBic
20%
 20%  [ 1 ]
Highspeed
0%
 0%  [ 0 ]
Reno
0%
 0%  [ 0 ]
BBR
20%
 20%  [ 1 ]
Another
0%
 0%  [ 0 ]
Total Votes : 5

Author Message
7heblackwolf
DD-WRT User


Joined: 21 Nov 2019
Posts: 66

PostPosted: Fri Mar 20, 2020 2:50    Post subject: TCP Congestion Control 2020 review Reply with quote
Can we make a thread about this?
Looking up for info, comparatives, and reviews seems to be mostly outdated. But today you can find 16 options to choose in dd-wrt, so must be something worth to try.

Most updated info can be found in Wikipedia (https://en.wikipedia.org/wiki/TCP_congestion_control), but it's a vague info in practical usage means.
I found also a paper from 2012 making some tests that worth looking in here https://pdfs.semanticscholar.org/76e5/f7a9683c5f89396e7c10eec2a32ff7036467.pdf

I tried some tests forcing network congestion irl but maybe some iPerf expert could enlight us with more details about this.

Can you share info, experiences, experiments, etc?

Cheers

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pbphoto
DD-WRT User


Joined: 29 Oct 2017
Posts: 244

PostPosted: Fri Mar 20, 2020 10:48    Post subject: Reply with quote
I've been using Westwood for years - not really sure why and I haven't done any testing. But the performance is good even with multiple streams from different devices in the house.



Linksys WRT3200ACM: DD-WRT 42015, gateway mode, DNSMasq for DNS and DHCP, Wireguard client (Mullvad), Firewall enabled, QoS enabled HTB-CAKE, PBR enabled (SFE disabled). WIFI: 2.4ghz: NG-mixed, 20mhz channel width, channel 1, WPA2-CCMP-128. 5ghz: AC/N mixed, 80mhz channel width, channel 100+6, WPA2-CCMP-128.

Linksys WRT1900ACSv1: DD-WRT 42015, router mode, hardwired ethernet lan to WRT3200ACM above. WIFI: 2.4ghz: NG-mixed, 20mhz channel width, channel 11, WPA2-CCMP-128. 5ghz: AC/N mixed, 80mhz channel width, channel 52+6, WPA2-CCMP-128.
7heblackwolf
DD-WRT User


Joined: 21 Nov 2019
Posts: 66

PostPosted: Fri Mar 20, 2020 15:20    Post subject: Reply with quote
TPC Congestion Control is meant to work only when max bandwidth is reached. So it basically drop packets or hold them for a period of time. You don't see this in usual internet usage. I think that is the point not a lot of people check this (and only the shaper is tuned).

pbphoto wrote:
I've been using Westwood for years - not really sure why and I haven't done any testing. But the performance is good even with multiple streams from different devices in the house.



Linksys WRT3200ACM: DD-WRT 42015, gateway mode, DNSMasq for DNS and DHCP, Wireguard client (Mullvad), Firewall enabled, QoS enabled HTB-CAKE, PBR enabled (SFE disabled). WIFI: 2.4ghz: NG-mixed, 20mhz channel width, channel 1, WPA2-CCMP-128. 5ghz: AC/N mixed, 80mhz channel width, channel 100+6, WPA2-CCMP-128.

Linksys WRT1900ACSv1: DD-WRT 42015, router mode, hardwired ethernet lan to WRT3200ACM above. WIFI: 2.4ghz: NG-mixed, 20mhz channel width, channel 11, WPA2-CCMP-128. 5ghz: AC/N mixed, 80mhz channel width, channel 52+6, WPA2-CCMP-128.

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