Hi everyone.Speedtest by Ookla - The Global Broadband Speed Test .
My connection is rated for 2.5GB, and everything worked fine with the previous firmware.
ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Link partner advertised pause frame use: No
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 2500Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: external
Auto-negotiation: on
MDI-X: Unknown
Current message level: 0x000000ff (255)
drv probe link timer ifdown ifup rx_err tx_err
Link detected: yes
Is there anything I can check?
Thanks.
Hi
Could you please let us know:
What was the version of the previous firmware that worked fine?
Did you also run the Ookla speed test directly on the router with the previous firmware?
If you connect a PC to the 2.5Gbps LAN port and run the Ookla speed test, what speed do you get?
Hi,
4.7.7
Yes, I ran the Ookla speed test on the previous version as well, and it was about 2GB.
If I run the test from my PC, it works fine.
The strange thing is the CPU usage:
Test from the router:
Test from the PC:
Thanks
It seems that speedtest is consuming too much performance.
Which speedtest client are you using?
speedtest-cli in python from opkg?
speedtest in C++ from Ookla website?
If it is the former, it may be that updates to python or speedtest-cli have caused them to consume more performance.
Please try the official version from Ookla.
wget https://install.speedtest.net/app/cli/ookla-speedtest-1.2.0-linux-aarch64.tgz
tar -xvzf ookla-speedtest-1.2.0-linux-aarch64.tgz
chmod +x speedtest
./speedtest
This is the version I'm using
2 Likes
We also ran some tests using Flint2 + 4.8.0-op24.
The Ookla speedtest on your side seems to behave strangely.
Since our office only has 1Gbps network access, we switched to iperf3 to compare 4.7.7 and 4.8.0-op24.
Both can reach speeds of over 2.3Gbps, and the CPU load is relatively low.
4.7.7
4.8.0-op24
If you manually select a Speedtest server and try testing with a few different ones, are you able to achieve a better speed result?
# List Speedtest servers
.\speedtest -L
# Run Speedtest using a specific server (replace 12345 with the server ID)
.\speedtest -s 12345
1 Like
Sorry for the late reply,
I need to get some equipment for iperf3, I've never installed it. Do you have a guide?
Thanks
To install and use iPerf3 on Flint2, please follow the steps below.
opkg update
opkg install iperf3
Single-threaded upload test
iperf3 -c server_address
Single-threaded download test
iperf3 -c server_address -R
Four-thread download test
iperf3 -c server_address -R -P 4
You can find a list of available public servers here:
A list of public iPerf3 servers...
If you would like to test within your home network, you can start an iPerf3 server with the following command on other devices:
iperf3 -s
Further details are available in the official documentation:
iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool
gives me this error:
ing 217.61.40.96
PING 217.61.40.96 (217.61.40.96): 56 data bytes
64 bytes from 217.61.40.96: seq=0 ttl=54 time=14.057 ms
64 bytes from 217.61.40.96: seq=1 ttl=54 time=13.336 ms
64 bytes from 217.61.40.96: seq=2 ttl=54 time=13.417 ms
^C
--- 217.61.40.96 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 13.336/13.603/14.057 ms
root@GL-MT6000:~# iperf3 -c 217.61.40.96
Usage: iperf3 [-s|-c host] [options]
Try `iperf3 --help' for more information.
root@GL-MT6000:~# iperf3 -v
iperf 3.10.1 (cJSON 1.7.13)
Linux GL-MT6000 6.6.93 #0 SMP Mon Jun 23 20:40:36 2025 aarch64
Optional features available: CPU affinity setting, IPv6 flow label, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, bind to device, support IPv4 don't fragment
Even on different servers.
It's a little strange. Everything is working normally on our side.
root@GL-MT6000:~# iperf3 -c 217.61.40.96
Connecting to host 217.61.40.96, port 5201
[ 5] local 192.168.8.127 port 44518 connected to 217.61.40.96 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 102 KBytes 833 Kbits/sec 16 11.4 KBytes
[ 5] 1.00-2.00 sec 57.6 KBytes 472 Kbits/sec 0 12.7 KBytes
[ 5] 2.00-3.00 sec 52.0 KBytes 426 Kbits/sec 0 15.2 KBytes
[ 5] 3.00-4.00 sec 88.7 KBytes 727 Kbits/sec 0 17.7 KBytes
[ 5] 4.00-5.00 sec 88.7 KBytes 727 Kbits/sec 0 20.3 KBytes
[ 5] 5.00-6.00 sec 177 KBytes 1.45 Mbits/sec 0 30.4 KBytes
[ 5] 6.00-7.00 sec 250 KBytes 2.05 Mbits/sec 1 41.8 KBytes
[ 5] 7.00-8.00 sec 127 KBytes 1.04 Mbits/sec 0 45.6 KBytes
[ 5] 8.00-9.00 sec 254 KBytes 2.08 Mbits/sec 0 49.4 KBytes
[ 5] 9.00-10.00 sec 444 KBytes 3.64 Mbits/sec 0 62.1 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.60 MBytes 1.34 Mbits/sec 17 sender
[ 5] 0.00-10.00 sec 1.24 MBytes 1.04 Mbits/sec receiver
iperf Done.
root@GL-MT6000:~# iperf3 -v
iperf 3.10.1 (cJSON 1.7.13)
Linux GL-MT6000 6.6.93 #0 SMP Mon Jun 23 20:40:36 2025 aarch64
Optional features available: CPU affinity setting, IPv6 flow label, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, bind to device, support IPv4 don't fragment
root@GL-MT6000:~# cat /etc/glversion
4.8.0-op24
misuzu
August 23, 2025, 10:27am
13
I assume then that the 4.8.0 OP24 doesnt have the bug that plagues OpenWRT where the device only uses single core resulting to poor speed and performance? I'm planning to update from my 4.7.5 Op24 so I just want to make sure. Thanks!
I had to update the package: libiperf3
iperf3 -c it1.speedtest.aruba.it -R -P 4
Connecting to host it1.speedtest.aruba.it, port 5201
Reverse mode, remote host it1.speedtest.aruba.it is sending
[ 5] local 79.46.219.163 port 60468 connected to 31.14.130.68 port 5201
[ 7] local 79.46.219.163 port 60470 connected to 31.14.130.68 port 5201
[ 9] local 79.46.219.163 port 60480 connected to 31.14.130.68 port 5201
[ 11] local 79.46.219.163 port 60482 connected to 31.14.130.68 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 25.2 MBytes 212 Mbits/sec
[ 7] 0.00-1.00 sec 17.8 MBytes 149 Mbits/sec
[ 9] 0.00-1.00 sec 20.6 MBytes 173 Mbits/sec
[ 11] 0.00-1.00 sec 42.5 MBytes 356 Mbits/sec
[SUM] 0.00-1.00 sec 106 MBytes 889 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 1.00-2.00 sec 26.9 MBytes 225 Mbits/sec
[ 7] 1.00-2.00 sec 20.0 MBytes 168 Mbits/sec
[ 9] 1.00-2.00 sec 23.2 MBytes 195 Mbits/sec
[ 11] 1.00-2.00 sec 63.5 MBytes 533 Mbits/sec
[SUM] 1.00-2.00 sec 134 MBytes 1.12 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 2.00-3.00 sec 31.8 MBytes 266 Mbits/sec
[ 7] 2.00-3.00 sec 20.4 MBytes 171 Mbits/sec
[ 9] 2.00-3.00 sec 25.9 MBytes 217 Mbits/sec
[ 11] 2.00-3.00 sec 46.8 MBytes 392 Mbits/sec
[SUM] 2.00-3.00 sec 125 MBytes 1.05 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 3.00-4.00 sec 33.8 MBytes 283 Mbits/sec
[ 7] 3.00-4.00 sec 23.1 MBytes 194 Mbits/sec
[ 9] 3.00-4.00 sec 27.0 MBytes 227 Mbits/sec
[ 11] 3.00-4.00 sec 40.0 MBytes 336 Mbits/sec
[SUM] 3.00-4.00 sec 124 MBytes 1.04 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 4.00-5.00 sec 33.6 MBytes 282 Mbits/sec
[ 7] 4.00-5.00 sec 25.4 MBytes 213 Mbits/sec
[ 9] 4.00-5.00 sec 23.8 MBytes 199 Mbits/sec
[ 11] 4.00-5.00 sec 41.0 MBytes 344 Mbits/sec
[SUM] 4.00-5.00 sec 124 MBytes 1.04 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 5.00-6.00 sec 34.5 MBytes 289 Mbits/sec
[ 7] 5.00-6.00 sec 25.8 MBytes 216 Mbits/sec
[ 9] 5.00-6.00 sec 24.2 MBytes 203 Mbits/sec
[ 11] 5.00-6.00 sec 37.9 MBytes 318 Mbits/sec
[SUM] 5.00-6.00 sec 122 MBytes 1.03 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 6.00-7.00 sec 32.9 MBytes 276 Mbits/sec
[ 7] 6.00-7.00 sec 23.6 MBytes 198 Mbits/sec
[ 9] 6.00-7.00 sec 24.9 MBytes 209 Mbits/sec
[ 11] 6.00-7.00 sec 39.4 MBytes 330 Mbits/sec
[SUM] 6.00-7.00 sec 121 MBytes 1.01 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 7.00-8.00 sec 34.5 MBytes 289 Mbits/sec
[ 7] 7.00-8.00 sec 22.8 MBytes 191 Mbits/sec
[ 9] 7.00-8.00 sec 26.1 MBytes 219 Mbits/sec
[ 11] 7.00-8.00 sec 40.0 MBytes 336 Mbits/sec
[SUM] 7.00-8.00 sec 123 MBytes 1.03 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 8.00-9.00 sec 35.1 MBytes 295 Mbits/sec
[ 7] 8.00-9.01 sec 24.6 MBytes 205 Mbits/sec
[ 9] 8.00-9.01 sec 25.8 MBytes 214 Mbits/sec
[ 11] 8.00-9.01 sec 38.9 MBytes 324 Mbits/sec
[SUM] 8.00-9.00 sec 124 MBytes 1.04 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 9.00-10.00 sec 37.2 MBytes 312 Mbits/sec
[ 7] 9.01-10.00 sec 25.0 MBytes 211 Mbits/sec
[ 9] 9.01-10.00 sec 22.4 MBytes 189 Mbits/sec
[ 11] 9.01-10.00 sec 38.4 MBytes 324 Mbits/sec
[SUM] 9.00-10.00 sec 123 MBytes 1.03 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 348 MBytes 292 Mbits/sec 12971 sender
[ 5] 0.00-10.00 sec 326 MBytes 273 Mbits/sec receiver
[ 7] 0.00-10.00 sec 243 MBytes 204 Mbits/sec 8462 sender
[ 7] 0.00-10.00 sec 228 MBytes 192 Mbits/sec receiver
[ 9] 0.00-10.00 sec 261 MBytes 219 Mbits/sec 9349 sender
[ 9] 0.00-10.00 sec 244 MBytes 205 Mbits/sec receiver
[ 11] 0.00-10.00 sec 456 MBytes 383 Mbits/sec 16710 sender
[ 11] 0.00-10.00 sec 428 MBytes 359 Mbits/sec receiver
[SUM] 0.00-10.00 sec 1.28 GBytes 1.10 Gbits/sec 47492 sender
[SUM] 0.00-10.00 sec 1.20 GBytes 1.03 Gbits/sec receiver
iperf Done.
Thanks
Could you please confirm if there are any other programs running that might be consuming or limiting CPU performance, such as VPN, AdGuard Home, or luci-app-cpufreq?
At the moment, I am not certain why Core 2 shows nearly 100% usage during your testing.
I would suggest enabling display of kernel threads in htop (F2 to open settings) since it may being hiding the real process using the CPU. Also note that the user is probably using a PPPoE connection and I'm not sure if that may affect the performance.
@TheNewHEROBRINE @will.qiu
This is the test I did.
Thanks
Solved.
iperf3 -c it1.speedtest.aruba.it -R -P 4
Connecting to host it1.speedtest.aruba.it, port 5201
Reverse mode, remote host it1.speedtest.aruba.it is sending
[ 5] local 79.46.219.163 port 39500 connected to 31.14.130.68 port 5201
[ 7] local 79.46.219.163 port 39512 connected to 31.14.130.68 port 5201
[ 9] local 79.46.219.163 port 39514 connected to 31.14.130.68 port 5201
[ 11] local 79.46.219.163 port 39518 connected to 31.14.130.68 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 48.6 MBytes 407 Mbits/sec
[ 7] 0.00-1.00 sec 51.8 MBytes 434 Mbits/sec
[ 9] 0.00-1.00 sec 42.6 MBytes 357 Mbits/sec
[ 11] 0.00-1.00 sec 50.2 MBytes 421 Mbits/sec
[SUM] 0.00-1.00 sec 193 MBytes 1.62 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 1.00-2.00 sec 49.8 MBytes 417 Mbits/sec
[ 7] 1.00-2.00 sec 48.1 MBytes 404 Mbits/sec
[ 9] 1.00-2.00 sec 52.1 MBytes 437 Mbits/sec
[ 11] 1.00-2.00 sec 50.8 MBytes 426 Mbits/sec
[SUM] 1.00-2.00 sec 201 MBytes 1.68 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 2.00-3.00 sec 52.1 MBytes 437 Mbits/sec
[ 7] 2.00-3.00 sec 46.5 MBytes 390 Mbits/sec
[ 9] 2.00-3.00 sec 47.6 MBytes 399 Mbits/sec
[ 11] 2.00-3.00 sec 54.8 MBytes 459 Mbits/sec
[SUM] 2.00-3.00 sec 201 MBytes 1.69 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 3.00-4.00 sec 48.5 MBytes 406 Mbits/sec
[ 7] 3.00-4.01 sec 45.8 MBytes 382 Mbits/sec
[ 9] 3.00-4.01 sec 45.4 MBytes 379 Mbits/sec
[ 11] 3.00-4.01 sec 52.1 MBytes 436 Mbits/sec
[SUM] 3.00-4.00 sec 192 MBytes 1.60 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 4.00-5.00 sec 49.1 MBytes 414 Mbits/sec
[ 7] 4.01-5.00 sec 44.6 MBytes 376 Mbits/sec
[ 9] 4.01-5.00 sec 42.6 MBytes 359 Mbits/sec
[ 11] 4.01-5.00 sec 50.0 MBytes 421 Mbits/sec
[SUM] 4.00-5.00 sec 186 MBytes 1.57 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 5.00-6.00 sec 49.9 MBytes 418 Mbits/sec
[ 7] 5.00-6.00 sec 43.6 MBytes 366 Mbits/sec
[ 9] 5.00-6.00 sec 44.6 MBytes 374 Mbits/sec
[ 11] 5.00-6.00 sec 49.6 MBytes 416 Mbits/sec
[SUM] 5.00-6.00 sec 188 MBytes 1.57 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 6.00-7.00 sec 52.8 MBytes 443 Mbits/sec
[ 7] 6.00-7.00 sec 48.8 MBytes 409 Mbits/sec
[ 9] 6.00-7.00 sec 44.6 MBytes 374 Mbits/sec
[ 11] 6.00-7.00 sec 49.4 MBytes 414 Mbits/sec
[SUM] 6.00-7.00 sec 196 MBytes 1.64 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 7.00-8.00 sec 47.6 MBytes 399 Mbits/sec
[ 7] 7.00-8.00 sec 48.6 MBytes 407 Mbits/sec
[ 9] 7.00-8.00 sec 43.9 MBytes 368 Mbits/sec
[ 11] 7.00-8.00 sec 49.4 MBytes 414 Mbits/sec
[SUM] 7.00-8.00 sec 190 MBytes 1.59 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 8.00-9.00 sec 46.9 MBytes 393 Mbits/sec
[ 7] 8.00-9.00 sec 47.5 MBytes 399 Mbits/sec
[ 9] 8.00-9.00 sec 47.1 MBytes 396 Mbits/sec
[ 11] 8.00-9.00 sec 49.2 MBytes 414 Mbits/sec
[SUM] 8.00-9.00 sec 191 MBytes 1.60 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ 5] 9.00-10.00 sec 50.9 MBytes 427 Mbits/sec
[ 7] 9.00-10.00 sec 46.9 MBytes 393 Mbits/sec
[ 9] 9.00-10.00 sec 45.4 MBytes 381 Mbits/sec
[ 11] 9.00-10.00 sec 50.1 MBytes 420 Mbits/sec
[SUM] 9.00-10.00 sec 193 MBytes 1.62 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 524 MBytes 440 Mbits/sec 10658 sender
[ 5] 0.00-10.00 sec 496 MBytes 416 Mbits/sec receiver
[ 7] 0.00-10.00 sec 504 MBytes 423 Mbits/sec 9915 sender
[ 7] 0.00-10.00 sec 472 MBytes 396 Mbits/sec receiver
[ 9] 0.00-10.00 sec 485 MBytes 407 Mbits/sec 10644 sender
[ 9] 0.00-10.00 sec 456 MBytes 382 Mbits/sec receiver
[ 11] 0.00-10.00 sec 534 MBytes 448 Mbits/sec 10722 sender
[ 11] 0.00-10.00 sec 506 MBytes 424 Mbits/sec receiver
[SUM] 0.00-10.00 sec 2.00 GBytes 1.72 Gbits/sec 41939 sender
[SUM] 0.00-10.00 sec 1.89 GBytes 1.62 Gbits/sec receiver
iperf Done.
Thanks
3 Likes
system
September 23, 2025, 10:19am
19
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