AR-750S Maximum Speed 20Mbps?

alzhao · 2019-07-28T23:43:32.667Z

The 5G WiFi of AR750S can easily achieve 100+ Mbps without problem. Seems there is something wrong but I am not sure.

The bitrate displayed is only 6mbps. Not sure why.

Are you using repeater or cable in WAN?

Can you ssh to the router and get the following info

ifconfig

danair · 2019-07-28T23:48:48.649Z

I have recently done a factory reset and it made no difference.

It is connected to LAN via gigabit switch.

I have tried in both router mode and AP mode.

The output of ifconfig is:

root@GL-AR750S:~# ifconfig
br-lan    Link encap:Ethernet  HWaddr E4:95:6E:45:92:48
          inet addr:192.168.8.1  Bcast:192.168.8.255  Mask:255.255.255.0
          inet6 addr: fe80::e695:6eff:fe45:9248/64 Scope:Link
          inet6 addr: fdf7:17ee:1a23:10::1/60 Scope:Global
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2300659 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4619494 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6446985449 (6.0 GiB)  TX bytes:6196401678 (5.7 GiB)

    eth0      Link encap:Ethernet  HWaddr E4:95:6E:45:92:48
              inet6 addr: fe80::e695:6eff:fe45:9248/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:1876726 errors:0 dropped:0 overruns:0 frame:0
              TX packets:1128872 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:2288586757 (2.1 GiB)  TX bytes:965574794 (920.8 MiB)
              Interrupt:4

    eth0.1    Link encap:Ethernet  HWaddr E4:95:6E:45:92:48
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:0 errors:0 dropped:0 overruns:0 frame:0
              TX packets:11397 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:0 (0.0 B)  TX bytes:3662064 (3.4 MiB)

    eth0.2    Link encap:Ethernet  HWaddr E4:95:6E:45:92:48
              inet addr:192.168.0.222  Bcast:192.168.0.255  Mask:255.255.255.0
              inet6 addr: fe80::e695:6eff:fe45:9248/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:1870814 errors:0 dropped:2058 overruns:0 frame:0
              TX packets:1112169 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:2251140112 (2.0 GiB)  TX bytes:956355249 (912.0 MiB)

    lo        Link encap:Local Loopback
              inet addr:127.0.0.1  Mask:255.0.0.0
              inet6 addr: ::1/128 Scope:Host
              UP LOOPBACK RUNNING  MTU:65536  Metric:1
              RX packets:475 errors:0 dropped:0 overruns:0 frame:0
              TX packets:475 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1
              RX bytes:51316 (50.1 KiB)  TX bytes:51316 (50.1 KiB)

    wlan0     Link encap:Ethernet  HWaddr E4:95:6E:45:92:49
              inet6 addr: fe80::e695:6eff:fe45:9249/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:6119729 errors:0 dropped:0 overruns:0 frame:0
              TX packets:4629220 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000
              RX bytes:6685424853 (6.2 GiB)  TX bytes:6292474797 (5.8 GiB)

alzhao · 2019-07-28T23:53:24.980Z

Did you disable 2.4G WiFi interfere? There is only wlan0 as WiFi interface.

danair · 2019-07-28T23:54:49.487Z

Yes, no particular reason but I did disable 2.4G.

alzhao · 2019-07-30T01:21:05.887Z

Can you try to turn off wmm like this post

Xbox One X refuses to get an IP on 5ghz. Works fine on 2.4ghz. What gives? Technical Support for Routers

Ok so this is a bit weird for me. My Xbox One X can connect to 2.4 ghz just fine. However, it fails to get an IP address from DHCP server on 5 ghz. On the router end, it does get an IP of 192.168.8.125 but for whatever reason, the xbox doesn’t acknowledge it. Router: Slate (GL-A750S-EXT) No idea where to proceed from here. I’m happy I can get on 2.4 ghz at least, but I’d prefer to be on 5 ghz just for reliability. (My xbox is near my microwave, which kills the wifi signal)

robotluo · 2019-07-30T01:42:34.027Z

Hi,danair

5G wifi has a speed of 433M, but the connection between it and your device needs to be negotiated. Can you see what the connection rate between the AR750S and your device is?

jeffsf · 2019-07-30T04:12:35.242Z

alzhao:

turn off wmm

Isn’t WMM required for 802.11n, so that disabling it would limit the device to the legacy rates?

alzhao · 2019-07-30T11:28:46.453Z

You can read that post, some devices especially apple has problems with wmm. So wmm has to be turned off in order for some legacy devices to work properly.

I never had problems with iPhone 6 and iPhone X myself. But iPhone does not have good WiFi chip

danair · 2019-07-31T10:36:22.055Z

433.3 Mbit/s, 80MHz, VHT-MCS 9, VHT-NSS 1, Short GI
6.0 Mbit/s, 20MHz

danair · 2019-07-31T10:37:10.652Z

I tried that but it doesn’t make a difference. By the way, I get the same speed from a laptop and iPhone.

danair · 2019-07-31T13:32:41.072Z

Just to add, I’ve run a LAN speed test over another (fast) wireless network against a USB hard drive connected to the AR750S and it’s returning 52Mbps. So it’s definitely a constraint on the AR750S wireless.

jeffsf · 2019-07-31T15:11:42.538Z

danair:

speed test over another (fast) wireless network against a USB hard drive connected to the AR750S and it’s returning 52Mbps

Hmm, so you’re not really measuring link throughput, but file-transfer rate to some drive?

You’re then likely limited by CPU, especially if you’re using Samba or some other “heavy” protocol. You’ve got crypto and USB involved, both of which can be CPU intensive.

danair · 2019-07-31T15:15:48.977Z

Let me clarify - my concern is that internet speeds are maxing out at 20 Mbps on wireless 5G band. What I’m demonstrating here is that the limitation is the wireless as it’s giving higher throughput over the LAN.

alzhao · 2019-07-31T15:38:31.930Z

Are you using Speedtest.net to test speed?

Can you disable IPV6 and try again? OpenWrt Forum Archive

At last, what is your firmware version? Can you upgrade to latest 3.026 without reserving settings and try again? Download the tar file here and upload to the router’s UI->upgrade . GL.iNet download center

danair · 2019-07-31T15:54:44.423Z

Yes speedtest.net for a internet speed test and LAN Speed Test software to test network file speeds over wireless.

I disabled IPV6 and the results are marginally faster but broadly in line with before:

Speedtest.net: 24 Mbps
LAN Speed Test: 34 Mbps

I’m on 3.026 already. I think I preserved settings when I upgraded, should I try a factory reset?

alzhao · 2019-07-31T15:56:48.071Z

Yes. pls do a factory reset from the UI and disable IPv6 again.

jeffsf · 2019-07-31T16:13:05.629Z

It’s something about your environment or config.

From my AR750S just now, link is over 802.11s with batman-adv routing to an active Linksys EA8300 (IPQ4019/QCA9888, QCA9888 for this link) in a routing situation, client over wired, then routed over 802.11s to server. ath10k (non-CT) drivers and firmware, as the -CT drivers don’t support 802.11s for the Wave 1 chip sets, from what I understand.

Connecting to host 192.168.1.9, port 5201
[  5] local 192.168.1.2 port 32964 connected to 192.168.1.9 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  12.1 MBytes   101 Mbits/sec   33    337 KBytes       
[  5]   1.00-2.00   sec  10.7 MBytes  89.7 Mbits/sec    0    393 KBytes       
[  5]   2.00-3.00   sec  11.6 MBytes  97.5 Mbits/sec    0    434 KBytes       
[  5]   3.00-4.00   sec  10.8 MBytes  90.2 Mbits/sec   25    331 KBytes       
[  5]   4.00-5.00   sec  11.7 MBytes  98.5 Mbits/sec    0    356 KBytes       
[  5]   5.00-6.00   sec  9.82 MBytes  82.4 Mbits/sec    0    370 KBytes       
[  5]   6.00-7.00   sec  10.8 MBytes  90.2 Mbits/sec    0    392 KBytes       
[  5]   7.00-8.00   sec  11.6 MBytes  97.0 Mbits/sec    0    414 KBytes       
[  5]   8.00-9.00   sec  10.7 MBytes  89.7 Mbits/sec    0    434 KBytes       
[  5]   9.00-10.00  sec  11.6 MBytes  97.5 Mbits/sec    2    327 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   111 MBytes  93.4 Mbits/sec   60             sender
[  5]   0.00-10.04  sec   109 MBytes  91.2 Mbits/sec                  receiver

  CPU[|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||100.0%]   Tasks: 17, 0 thr; 1 running
  Mem[|||||||||||||||||||||||||||                                      22.8M/120M]   Load average: 0.12 0.08 0.07 
  Swp[                                                                      0K/0K]   Uptime: 00:16:41

danair · 2019-07-31T23:53:15.725Z

I’ve done that but it didn’t help. However, I did do another test. I connected to a mobile hotspot on my mobile phone and got 45 Mbps so it seems to be either the LAN interface on the AR-750S or something else on my LAN. I’ve checked my router and there’s no QOS or anything else that might be limiting so it must be the LAN interface on the 750S.

Is there anything else I can try?

jeffsf · 2019-08-01T00:33:38.985Z

Install htop or, if already there, top, and check that you aren’t CPU-bound. Don’t open LuCI while trying to push the router hard as single-core, MIPS-based SoCs, in general, don’t have a lot of CPU power and LuCI can consume quite a bit alone.

Is your client single-stream, or does it support multiple streams? Checking

iw dev <wlan device> station dump

should show the modulation type of the connection in use.

danair · 2019-08-01T00:49:33.804Z

Thanks jeffsf. I installed htop and it’s clear that I’m not CPU-bound.

Here’s the output of iw dev:

inactive time:  0 ms
rx bytes:       101247804
rx packets:     151968
tx bytes:       179021139
tx packets:     199179
tx retries:     0
tx failed:      10
rx drop misc:   53
signal:         -55 [-55, -73] dBm
signal avg:     -54 [-54, -73] dBm
tx bitrate:     6.0 MBit/s
rx bitrate:     390.0 MBit/s VHT-MCS 8 80MHz short GI VHT-NSS 1
rx duration:    10811168 us
authorized:     yes
authenticated:  yes
associated:     yes
preamble:       long
WMM/WME:        yes
MFP:            no
TDLS peer:      no
DTIM period:    2
beacon interval:100
short slot time:yes
connected time: 3737 seconds