Inconsistent/Slow Wi-Fi Speeds on EA8500

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msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1782
Location: Illinois Moderator

PostPosted: Sat Jul 04, 2020 20:22    Post subject: Reply with quote
Dunno what to tell you, could be an old and crap client bogging down the rest of the network.

Might be time to telnet in a reset everything.
nvram erase && reboot

_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]52396 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800] resting
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)


Last edited by msoengineer on Sat Jul 04, 2020 22:46; edited 2 times in total
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stephensuley
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Joined: 09 Feb 2008
Posts: 641
Location: Canada

PostPosted: Sat Jul 04, 2020 21:35    Post subject: Reply with quote
msoengineer wrote:
Dunno what to tell you, could be an old and crap client bogging down the rest of the network.

Might be time to telnet in a reset everything.
nvram erase && reboot


I tried that before and after flashing r43192 on Monday. No luck.

_________________
Location (urban) - 1x Linksys EA8500 (AP wlan0 & wlan1 enabled)
1x Asus 68u (Repeater Bridge w/VAP) - wl0 disabled
1x Asus 87u (Client Bridge) - wl1 disabled


Latest and greatest builds Wink
msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1782
Location: Illinois Moderator

PostPosted: Sat Jul 04, 2020 22:53    Post subject: Reply with quote
I would run an iperf between two computers (one on lan {runs iperf3 as server} and one on wifi {runs iperf3 as a client}) and see what kind of mbps you see transferred between the two.

Use this command from the client to the server:

iperf3 -c X.X.X.X -b 1000M -u -P 4

x.x.x.x is the IP back to the lan computer.

That will do 4 simultaneous UDP ("-u" above) streams of traffic to the server side and you will see the real throughput of the wifi on 2.4ghz. Without this data, I can't help you more to tell you if you have an issue or need a tissue.

I also assume you are not doing torrents, if you are doing torrents- read up on the forums how to tweak the tcp settings and choose the best TCP Congestion Control method.

_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]52396 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800] resting
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)


Last edited by msoengineer on Thu Jul 09, 2020 3:22; edited 2 times in total
stephensuley
DD-WRT Guru


Joined: 09 Feb 2008
Posts: 641
Location: Canada

PostPosted: Sun Jul 05, 2020 21:19    Post subject: Reply with quote
30hrs uptime, no issues to report.

Using my physical Dell desktop running Ubuntu eth wire connected to my client bridge. It's bridged to the ea8500's wl0 configured as per the guide. I get 140mbps sustained in both directions.

The distance between the client bridge(CB) and the (AP)EA8500 is ~30 ft. LoS. However the CB is on the 2nd story of the house above the ea8500 on the main floor.The main floor has a high ceiling and the second floor is a total of 22 steps up.

However while the issue is impacting the network reports show a maximum of ~2-3mbps download while upload remains at 140mbps. Also when the issue occurs all clients connected on the wl0 radio are impacted the same. A reboot restores normal operation.

The wl1 radio is unaffected.

_________________
Location (urban) - 1x Linksys EA8500 (AP wlan0 & wlan1 enabled)
1x Asus 68u (Repeater Bridge w/VAP) - wl0 disabled
1x Asus 87u (Client Bridge) - wl1 disabled


Latest and greatest builds Wink
Rocketboy235
DD-WRT User


Joined: 14 Oct 2016
Posts: 109
Location: United States

PostPosted: Tue Jul 07, 2020 5:19    Post subject: Reply with quote
Hello,

Just reporting back.

So I've been running the router for about a week now in the main network and for the first few days, the speed tests was good for both 2.4 and 5 GHz networks. Last Saturday, the 2.4 GHz network started slowing down to 3-4 Mbps so I decided to turn off Airtime Fairness. With that, my WiFi reset (but router system did not reset which is expected) and thus, my internet speeds were back to normal.

Now, 2 days afterwards, Monday, it appears that the 2.4 GHz network is slow again (5 GHz network is perfectly fine). But because Airtime Fairness is off, I wonder if maybe the real issue could be the WLAN chips are in bad shape? This issue has been persisting for quite some time, I did a nvram erase and all that stuff and flashing new builds and it seems like the issue never goes away. I thought that maybe it was Airtime Fairness but because the WiFi resets when you make certain wireless setting changes, it's hard to say for sure. Now I'm not sure what could be causing the slowdown for 2.4 GHz but it feels like it may be a hardware issue? what do you guys think?
msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1782
Location: Illinois Moderator

PostPosted: Tue Jul 07, 2020 13:57    Post subject: Reply with quote
Rocketboy235 wrote:
Hello,

Just reporting back...

Now I'm not sure what could be causing the slowdown for 2.4 GHz but it feels like it may be a hardware issue? what do you guys think?


Without running iperf3 testing, the right way, there isn't a way to tell what is going on. People need to run the iperf tests to prove that it's a real issue between router and client and not something else which is coming into play. When the router/client are exhibiting slowness, run an iperf test between router and wifi, and then a lan and wifi device (through the router) and report the results. Only then can the issue be taken seriously and more info can be gleaned. See my signature for IPERF3 How-To...

_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]52396 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800] resting
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
Rocketboy235
DD-WRT User


Joined: 14 Oct 2016
Posts: 109
Location: United States

PostPosted: Tue Jul 07, 2020 23:38    Post subject: Reply with quote
msoengineer wrote:
Rocketboy235 wrote:
Hello,

Just reporting back...

Now I'm not sure what could be causing the slowdown for 2.4 GHz but it feels like it may be a hardware issue? what do you guys think?


Without running iperf3 testing, the right way, there isn't a way to tell what is going on. People need to run the iperf tests to prove that it's a real issue between router and client and not something else which is coming into play. When the router/client are exhibiting slowness, run an iperf test between router and wifi, and then a lan and wifi device (through the router) and report the results. Only then can the issue be taken seriously and more info can be gleaned. See my signature for IPERF3 How-To...


I'll report back with iperf results. Did it in my 1st post though. I have a feeling I'm going to get similar results. Actually, if it might be similar results, maybe it's something else and not entirely the hardware. Either way, I'll report back in a bit.
mrjcd
DD-WRT Guru


Joined: 31 Jan 2015
Posts: 6268
Location: Texas

PostPosted: Wed Jul 08, 2020 0:47    Post subject: Reply with quote
few days new to me moto g7 power on 5 GHz ...stupid thing only connects at 150 --- hell my oldass Droid Turbo connected at 433 Twisted Evil


moto g7 on 2.4
Rocketboy235
DD-WRT User


Joined: 14 Oct 2016
Posts: 109
Location: United States

PostPosted: Wed Jul 08, 2020 2:31    Post subject: Reply with quote
mrjcd wrote:
few days new to me moto g7 power on 5 GHz ...stupid thing only connects at 150 --- hell my oldass Droid Turbo connected at 433 Twisted Evil

moto g7 on 2.4


I try not to rely on the Wifi Sweetspots results too much though it is handy if you want to quickly check. I noticed that the results shown on Wifi Sweetspots are way off when comparing it to the bandwidth monitoring on the DD-WRT web gui
msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1782
Location: Illinois Moderator

PostPosted: Wed Jul 08, 2020 3:37    Post subject: Reply with quote
mrjcd wrote:
few days new to me moto g7 power on 5 GHz ...stupid thing only connects at 150 --- hell my oldass Droid Turbo connected at 433 Twisted Evil


moto g7 on 2.4


My wife has a moto g5+ and F.I.L. has a G7 both of which regrettably use a 1x1:1 stream wifi chip inside...Moto and their budget line of "G" devices all use the same shit 1x1:1 wifi... regretably there's nothing you can do but upgrade to a "better" phone. I really like the OnePlus 6T and 7T for the money- best hardware to cost balance you can find.

_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]52396 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800] resting
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
05dyna
DD-WRT Guru


Joined: 25 Jan 2008
Posts: 968

PostPosted: Thu Jul 09, 2020 0:18    Post subject: Reply with quote
msoengineer wrote:
I would run an iperf between two computers (one on lan {runs iperf3 as server} and one on wifi {runs iperf3 as a client}) and see what kind of mbps you see transferred between the two.

Use this command from the client to the server:

iperf3 -c X.X.X.X -b 1000M -u -P 4

x.x.x.x is the IP back to the lan computer.

That will do 4 simultaneous streams of traffic to the server side and you will see the real throughput of the wifi on 2.4ghz. Without this data, I can't help you more to tell you if you have an issue or need a tissue.



is that command correct or is there a bad switch? I’m just stating the obvious here but you dropped the “I” in iperf3, I tried corrected and I get the following:

iperf3: error –unable to connect to server: connection refused

if I do the simple command (below) works as expected. I would like to try it with the four streams as you say but no luck with that command as is, then again could be my eyes. What do you think?

iperf3 –c <iperf server ip>
mrjcd
DD-WRT Guru


Joined: 31 Jan 2015
Posts: 6268
Location: Texas

PostPosted: Thu Jul 09, 2020 2:04    Post subject: Reply with quote
05dyna wrote:
msoengineer wrote:
I would run an iperf between two computers (one on lan {runs iperf3 as server} and one on wifi {runs iperf3 as a client}) and see what kind of mbps you see transferred between the two.

Use this command from the client to the server:

iperf3 -c X.X.X.X -b 1000M -u -P 4

x.x.x.x is the IP back to the lan computer.

That will do 4 simultaneous streams of traffic to the server side and you will see the real throughput of the wifi on 2.4ghz. Without this data, I can't help you more to tell you if you have an issue or need a tissue.



is that command correct or is there a bad switch? I’m just stating the obvious here but you dropped the “I” in iperf3, I tried corrected and I get the following:

iperf3: error –unable to connect to server: connection refused

if I do the simple command (below) works as expected. I would like to try it with the four streams as you say but no luck with that command as is, then again could be my eyes. What do you think?

iperf3 –c <iperf server ip>

iperf3 -c X.X.X.X -b 1000M -u -p 4
that would be
iperf3 -c X.X.X.X -b 1000M -u -P 4

from my main router to iperf3 server on oldass laptop that only does 2.4 and best connects is 150
Code:
mrjcd@OMG-Deb:~$ ssh root@citadel-station-homeworld.mrjcd.com
DD-WRT v3.0-r43720 std (c) 2020 NewMedia-NET GmbH
Release: 07/09/20
Board: Linksys EA8500
==========================================================
 
     ___  ___     _      _____  ______       ____  ___
    / _ \/ _ \___| | /| / / _ \/_  __/ _  __|_  / / _ \
   / // / // /___/ |/ |/ / , _/ / /   | |/ //_ <_/ // /
  /____/____/    |__/|__/_/|_| /_/    |___/____(_)___/
                                                     
                       DD-WRT v3.0
                   http://www.dd-wrt.com
 
==========================================================


BusyBox v1.32.0 (2020-07-09 00:57:58 +03) built-in shell (ash)

root@Citadel-Station-Homeworld:~# iperf3 -c will-be-was.mrjcd.com -b 1000M -u -P4
Connecting to host will-be-was.mrjcd.com, port 5201
[  5] local 10.72.28.13 port 47516 connected to 10.72.28.56 port 5201
[  7] local 10.72.28.13 port 45279 connected to 10.72.28.56 port 5201
[  9] local 10.72.28.13 port 35986 connected to 10.72.28.56 port 5201
[ 11] local 10.72.28.13 port 44310 connected to 10.72.28.56 port 5201
[ ID] Interval           Transfer     Bitrate         Total Datagrams
[  5]   0.00-1.00   sec  2.70 MBytes  22.6 Mbits/sec  1955 
[  7]   0.00-1.00   sec  2.65 MBytes  22.3 Mbits/sec  1922 
[  9]   0.00-1.00   sec  2.65 MBytes  22.2 Mbits/sec  1919 
[ 11]   0.00-1.00   sec  2.64 MBytes  22.2 Mbits/sec  1915 
[SUM]   0.00-1.00   sec  10.6 MBytes  89.3 Mbits/sec  7711 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   1.00-2.00   sec  2.66 MBytes  22.3 Mbits/sec  1925 
[  7]   1.00-2.00   sec  2.61 MBytes  21.9 Mbits/sec  1892 
[  9]   1.00-2.00   sec  2.60 MBytes  21.8 Mbits/sec  1886 
[ 11]   1.00-2.00   sec  2.60 MBytes  21.8 Mbits/sec  1884 
[SUM]   1.00-2.00   sec  10.5 MBytes  87.9 Mbits/sec  7587 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   2.00-3.00   sec  2.50 MBytes  21.0 Mbits/sec  1813 
[  7]   2.00-3.00   sec  2.47 MBytes  20.7 Mbits/sec  1788 
[  9]   2.00-3.00   sec  2.47 MBytes  20.7 Mbits/sec  1788 
[ 11]   2.00-3.00   sec  2.46 MBytes  20.7 Mbits/sec  1785 
[SUM]   2.00-3.00   sec  9.91 MBytes  83.1 Mbits/sec  7174 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   3.00-4.00   sec  2.68 MBytes  22.5 Mbits/sec  1939 
[  7]   3.00-4.00   sec  2.63 MBytes  22.1 Mbits/sec  1905 
[  9]   3.00-4.00   sec  2.63 MBytes  22.1 Mbits/sec  1904 
[ 11]   3.00-4.00   sec  2.63 MBytes  22.0 Mbits/sec  1901 
[SUM]   3.00-4.00   sec  10.6 MBytes  88.6 Mbits/sec  7649 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   4.00-5.00   sec  2.71 MBytes  22.7 Mbits/sec  1960 
[  7]   4.00-5.00   sec  2.66 MBytes  22.3 Mbits/sec  1925 
[  9]   4.00-5.00   sec  2.65 MBytes  22.2 Mbits/sec  1920 
[ 11]   4.00-5.00   sec  2.65 MBytes  22.2 Mbits/sec  1918 
[SUM]   4.00-5.00   sec  10.7 MBytes  89.5 Mbits/sec  7723 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   5.00-6.00   sec  2.72 MBytes  22.8 Mbits/sec  1972 
[  7]   5.00-6.00   sec  2.67 MBytes  22.4 Mbits/sec  1933 
[  9]   5.00-6.00   sec  2.67 MBytes  22.4 Mbits/sec  1932 
[ 11]   5.00-6.00   sec  2.66 MBytes  22.3 Mbits/sec  1928 
[SUM]   5.00-6.00   sec  10.7 MBytes  90.0 Mbits/sec  7765 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   6.00-7.00   sec  2.68 MBytes  22.5 Mbits/sec  1939 
[  7]   6.00-7.00   sec  2.63 MBytes  22.0 Mbits/sec  1903 
[  9]   6.00-7.00   sec  2.63 MBytes  22.0 Mbits/sec  1903 
[ 11]   6.00-7.00   sec  2.62 MBytes  22.0 Mbits/sec  1899 
[SUM]   6.00-7.00   sec  10.6 MBytes  88.5 Mbits/sec  7644 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   7.00-8.00   sec  2.72 MBytes  22.8 Mbits/sec  1968 
[  7]   7.00-8.00   sec  2.67 MBytes  22.4 Mbits/sec  1932 
[  9]   7.00-8.00   sec  2.66 MBytes  22.3 Mbits/sec  1928 
[ 11]   7.00-8.00   sec  2.66 MBytes  22.3 Mbits/sec  1927 
[SUM]   7.00-8.00   sec  10.7 MBytes  89.8 Mbits/sec  7755 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   8.00-9.00   sec  2.60 MBytes  21.8 Mbits/sec  1883 
[  7]   8.00-9.00   sec  2.56 MBytes  21.5 Mbits/sec  1855 
[  9]   8.00-9.00   sec  2.56 MBytes  21.5 Mbits/sec  1855 
[ 11]   8.00-9.00   sec  2.55 MBytes  21.4 Mbits/sec  1849 
[SUM]   8.00-9.00   sec  10.3 MBytes  86.2 Mbits/sec  7442 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   9.00-10.00  sec  2.60 MBytes  21.9 Mbits/sec  1886 
[  7]   9.00-10.00  sec  2.57 MBytes  21.5 Mbits/sec  1858 
[  9]   9.00-10.00  sec  2.56 MBytes  21.5 Mbits/sec  1853 
[ 11]   9.00-10.00  sec  2.56 MBytes  21.5 Mbits/sec  1852 
[SUM]   9.00-10.00  sec  10.3 MBytes  86.3 Mbits/sec  7449 
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-10.00  sec  26.6 MBytes  22.3 Mbits/sec  0.000 ms  0/19240 (0%)  sender
[  5]   0.00-10.06  sec  26.6 MBytes  22.2 Mbits/sec  0.870 ms  2/19240 (0.01%)  receiver
[  7]   0.00-10.00  sec  26.1 MBytes  21.9 Mbits/sec  0.000 ms  0/18913 (0%)  sender
[  7]   0.00-10.06  sec  26.1 MBytes  21.8 Mbits/sec  0.805 ms  6/18913 (0.032%)  receiver
[  9]   0.00-10.00  sec  26.1 MBytes  21.9 Mbits/sec  0.000 ms  0/18888 (0%)  sender
[  9]   0.00-10.06  sec  26.1 MBytes  21.7 Mbits/sec  0.872 ms  5/18888 (0.026%)  receiver
[ 11]   0.00-10.00  sec  26.0 MBytes  21.8 Mbits/sec  0.000 ms  0/18858 (0%)  sender
[ 11]   0.00-10.06  sec  26.0 MBytes  21.7 Mbits/sec  0.659 ms  1/18858 (0.0053%)  receiver
[SUM]   0.00-10.00  sec   105 MBytes  87.9 Mbits/sec  0.000 ms  0/75899 (0%)  sender
[SUM]   0.00-10.06  sec   105 MBytes  87.4 Mbits/sec  0.802 ms  14/75899 (0.018%)  receiver

iperf Done.
root@Citadel-Station-Homeworld:~#


Twisted Evil Rolling Eyes Wink Twisted Evil
msoengineer
DD-WRT Guru


Joined: 21 Jan 2017
Posts: 1782
Location: Illinois Moderator

PostPosted: Thu Jul 09, 2020 3:07    Post subject: Reply with quote
05dyna wrote:
msoengineer wrote:
I would run an iperf between two computers (one on lan {runs iperf3 as server} and one on wifi {runs iperf3 as a client}) and see what kind of mbps you see transferred between the two.

Use this command from the client to the server:

iperf3 -c X.X.X.X -b 1000M -u -P 4

x.x.x.x is the IP back to the lan computer.

That will do 4 simultaneous streams of traffic to the server side and you will see the real throughput of the wifi on 2.4ghz. Without this data, I can't help you more to tell you if you have an issue or need a tissue.



is that command correct or is there a bad switch? I’m just stating the obvious here but you dropped the “I” in iperf3, I tried corrected and I get the following:

iperf3: error –unable to connect to server: connection refused

if I do the simple command (below) works as expected. I would like to try it with the four streams as you say but no luck with that command as is, then again could be my eyes. What do you think?

iperf3 –c <iperf server ip>


Typing too fast and dropped the leading "i" and missed that it needs to be a capital "P". I fixed my original instructions.

_________________
FORUM RULES

TIPS/TRICKS: Best QCA Wifi Settings | Latency tricks | QoS Port priority | NEVER USE MU-MIMO |
Why to NOT use MU-MIMO | Max Wifi Pwr by Country | Linux Wifi Pwr | AC MCS & AX MCS | QCA 5Ghz chnls to use | WIFI Freq WIKI | TFTP R7800 | Don't buy AX | IPERF3 How-To

[R9000]52396 nightly (Main Router)
[EA8500]43192 & 45493 (2xOffsite)
[R7800] resting
[WDR3600]BS 44715 (Offsite)
[A7v5]BS 43038 (Offsite+spare napping)
05dyna
DD-WRT Guru


Joined: 25 Jan 2008
Posts: 968

PostPosted: Thu Jul 09, 2020 3:31    Post subject: Reply with quote
@ msoengineer - working now, thanks!
darkwolphe
DD-WRT Novice


Joined: 05 Oct 2020
Posts: 5

PostPosted: Mon Oct 05, 2020 19:53    Post subject: Same issues on my EA8500 Reply with quote
Hello everyone,

I'm new to dd-wr0 and to the forum. I saw this post because I have the exact same issues happening on my EA8500. My Wifi (5GHz) slows down to ~5 Mbps after 3-5 days. I have to restart the router. But after the 3-5 days it goes back to ~5 Mbps again.

I noticed it happening after I switched to BS. I've tried multiple builds. I'm currently on DD-WRT v3.0-r44432 std. I used to have Kong and did not notice this issue, but I could not pass 120 Mbps on my Wifi using Kong builds.

I hope I provided enough information to help troubleshoot or fix the issue in future builds.

Any help is appreciated.
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