TCP Congestion Control bbr.

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Brimmy
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PostPosted: Thu Aug 23, 2018 18:10    Post subject: TCP Congestion Control bbr. Reply with quote
Have any of you heard of the TCP Congestion Control bbr and how it is the congestion control to solve bottlenecks on Linux based systems? Maybe one of you whom is an expert svn ticket maker can request this to be implemented.

Any thoughts?
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mrjcd
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Joined: 31 Jan 2015
Posts: 4854
Location: Texas

PostPosted: Thu Aug 23, 2018 18:30    Post subject: Reply with quote
Get you a better router Cool
DD-WRT already has it for the EA8500.

I don't use it though Razz

EDIT: I think you also must have a unit running k4.9.x
kernel-panic69
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Joined: 08 May 2018
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PostPosted: Thu Aug 23, 2018 19:04    Post subject: Reply with quote
Yep, must be a 4.9+ kernel to enable bbr:

https://www.techrepublic.com/article/how-to-enable-tcp-bbr-to-improve-network-speed-on-linux/
ciscodlink
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PostPosted: Thu Aug 23, 2018 19:23    Post subject: Reply with quote
is the r7000 unable to run kernel 4.9?
jwh7
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PostPosted: Thu Aug 23, 2018 20:25    Post subject: Reply with quote
ciscodlink wrote:
is the r7000 unable to run kernel 4.9?
Ya, Broadcom ARM drivers are linked with k4.4. Plus, last I knew, the k4.9 Atheros/Qualcomm stuff runs pretty badly on DD; Kong reverted to k3.18 for it. You could try OpenWRT, but lose 5 GHz. Assuming it's supported at all...

Yup:
https://openwrt.org/toh/netgear/r7000
    Unsupported Functions
    WiFi 2.4GHz partly, WiFi 5GHz
:-\

_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 19.7.7|FT2019.3: EA6900v1.1@1GHz, F7D8302|DD 41596: WNDR4500v2, WNDR4000@533, R6300v1,
E2500, E1500@353, WRT54*@250: GLv1.1 nsg, GSv6 µ, RT-N66U@663
|OEM: WGR614v10@400 -> WNR1000v3 mod
kernel-panic69
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PostPosted: Thu Aug 23, 2018 20:51    Post subject: Reply with quote
It's like asking if an old proprietary Packard Bell desktop with a pentium 120 x86 will run a 4.14.x kernel. Depends on who you ask.

The trick is getting the proprietary Broadcom drivers to work with a modern kernel, and with the rest of DD-WRT, the latter is probably the more tricky part.
mrjcd
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Joined: 31 Jan 2015
Posts: 4854
Location: Texas

PostPosted: Thu Aug 23, 2018 20:53    Post subject: Reply with quote
jwh7 wrote:
... last I knew, the k4.9 Atheros/Qualcomm stuff runs pretty badly on DD

Don't run badly at all --- just have pretty bad latency issues for folks 100+ speed connections.
I'm still just 50/50 fiber so I don't have bad bufferbloat.
Brimmy
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Joined: 29 Mar 2015
Posts: 381

PostPosted: Thu Aug 23, 2018 21:51    Post subject: Reply with quote
Right, time for a router that runs kernel 4.9, thanks all!
Brimmy
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Joined: 29 Mar 2015
Posts: 381

PostPosted: Wed Sep 19, 2018 13:02    Post subject: Reply with quote
Hey guys, how to know which router will run the 4.9 kernel? Is there a chart/reference guide or something?
jwh7
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Joined: 25 Oct 2013
Posts: 2370
Location: Indy

PostPosted: Wed Sep 19, 2018 14:49    Post subject: Reply with quote
Brimmy wrote:
Hey guys, how to know which router will run the 4.9 kernel? Is there a chart/reference guide or something?
One could dig thru the SVN configs for it, but looking at the build threads, Marvell and Atheros ARM uses 4.9.
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 19.7.7|FT2019.3: EA6900v1.1@1GHz, F7D8302|DD 41596: WNDR4500v2, WNDR4000@533, R6300v1,
E2500, E1500@353, WRT54*@250: GLv1.1 nsg, GSv6 µ, RT-N66U@663
|OEM: WGR614v10@400 -> WNR1000v3 mod
Brimmy
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Posts: 381

PostPosted: Wed Sep 19, 2018 16:22    Post subject: Reply with quote
SVN logs huh, Marvell and Atheros ARM huh, okay got it. I will check the WIKI Devi to find a good list of routers.

Been a good 10 years since i left linksys, what do you think/know of the performance of this linksys using DDwrt Linksys https://www.amazon.com/Linksys-AC3200-Dual-Band-Prioritization-WRT32X/dp/B072LQZFHM/ref=pd_rhf_se_p_img_3?_encoding=UTF8&psc=1&refRID=JXCF7D9TFKW0X59QFBC0
jwh7
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Joined: 25 Oct 2013
Posts: 2370
Location: Indy

PostPosted: Wed Sep 19, 2018 16:59    Post subject: Reply with quote
Brimmy wrote:
what do you think/know of the performance of this linksys using DDwrt Linksys
https://www.amazon.com/Linksys-AC3200-Dual-Band-Prioritization-WRT32X/dp/B072LQZFHM
Most seem to recommend the R7800, but it is more expensive. The WRT32X looks nice, but just be sure to research the device and build threads for it.
_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: FAQ, Builds, Types, Modes, Changes, Demo #
x64 OPNsense 19.7.7|FT2019.3: EA6900v1.1@1GHz, F7D8302|DD 41596: WNDR4500v2, WNDR4000@533, R6300v1,
E2500, E1500@353, WRT54*@250: GLv1.1 nsg, GSv6 µ, RT-N66U@663
|OEM: WGR614v10@400 -> WNR1000v3 mod
Brimmy
DD-WRT User


Joined: 29 Mar 2015
Posts: 381

PostPosted: Wed Sep 19, 2018 20:57    Post subject: Reply with quote
Understood, thanks for the heads up and your view.
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