spdMerlin spdMerlin v4.4.9 [2025-Jun-03] - Internet Speedtest and Monitoring Tool for AsusWRT Merlin

[Martinski]

Release Notes for spdMerlin v4.4.7 production release now available
[2025-May-29]

The fork from @Jack Yaz's repository is now hosted on the AMTM-OSR GitHub repo:

GitHub - AMTM-OSR/spdMerlin: spdMerlin is an internet speedtest and monitoring tool for AsusWRT Merlin with charts for daily, weekly and monthly summaries. It tracks download/upload bandwidth as well as latency, jitter and packet loss.

spdMerlin is an internet speedtest and monitoring tool for AsusWRT Merlin with charts for daily, weekly and monthly summaries. It tracks download/upload bandwidth as well as latency, jitter and pac...

github.com

1) NEW: Support for WireGuard client interfaces.

[PR submitted by @ExtremeFiretop]​

2) FIXED: Errors when loading the webGUI page on the 3006.102.x F/W version.

3) FIXED: Bug giving incorrect results when computing the free space available of a large-capacity USB-attached drive. This was preventing the user from resetting the database using the CLI menu.

4) FIXED: "Reset Database" functionality on the CLI menu, where the database file was correctly reset but the result was not reflected on the WebGUI page where "old" entries were still shown as if the database had not been reset.

5) IMPROVED: Modified all SQLite3 calls to capture and log errors in the system log.

6) IMPROVED: Modified SQLite3 configuration parameters to improve the trimming of records from the database and then perform "garbage collection" of deleted entries to reclaim unused space & avoid excessive fragmentation.

7) IMPROVED: Modified SQLite3 configuration parameters to improve the processing of database records.

8) IMPROVED: Modified code to set the corresponding priority level of log entries when calling the built-in logger utility.

9) IMPROVED: Modified the startup call made in the post-mount script to check if the USB-attached disk partition passed as the argument has indeed Entware installed.

10) IMPROVED: Added code to show the current database file size information on the CLI menu and the webGUI page.

11) IMPROVED: Added code to show the "JFFS Available" space information for the "Data Storage Location" option on the CLI menu and the webGUI page.

12) IMPROVED: Added code to check if sufficient JFFS storage space is available before moving database-related files/folders from USB location to JFFS partition. An error message is reported if not enough space is available, and the move request is aborted.

13) IMPROVED: Added code to check if the available JFFS storage space falls below 20% of total space or 10MB (whichever is lower) and report a warning when it does. A warning message is also shown on the SSH CLI menu and WebGUI page.

14) IMPROVED: Added and modified code so that every time the SSH CLI menu is run, it checks if the WebGUI page has already been mounted. If not found mounted, the script will run the code to remount the WebGUI.

15) IMPROVED: Improved code that creates (during installation) and removes (during uninstallation) the "AddOns" menu tab entry for the WebGUI to make sure it checks for and takes into account other add-ons that may have been installed before or were later installed after the initial installation.

16) IMPROVED: Added "export PATH" statement to give the built-in binaries higher priority than the equivalent Entware binaries.

17) IMPROVED: Various code improvements & fine-tuning.

 

[swejuggalo]

Is it normal that AutoBW configuration reverts to some type of default value after saving the configuration? (GUI version, CLI seems fine)

 

[Martinski]

Is it normal that AutoBW configuration reverts to some type of default value after saving the configuration? (GUI version, CLI seems fine)

I don't know the answer. It does seem wrong to have such a different behavior between the WebUI and the CLI menus but, again, I don't know if that's by designed or an error.

Frankly, I don't use the spdMerlin at all, so I'm not really familiar with all the settings and configuration options. If you want me to take a look, you'll need to provide more details and context (e.g. screenshots between WebUI and CLI, clear instructions to recreate the issue, the expected outcome, any logs, etc.). Without any details & context, I honestly have no idea how the "AutoBW configuration" is supposed to work.

 

[Martinski]

Release Notes for spdMerlin v4.4.8 production release now available
[2025-Jun-03]

1) FIXED: "duplicate column name" errors reported by SQLite3 during initial installation when the database "upgrade" was being performed.


The fork from @Jack Yaz's repository is now hosted on the AMTM-OSR GitHub repo:

GitHub - AMTM-OSR/spdMerlin: spdMerlin is an internet speedtest and monitoring tool for AsusWRT Merlin with charts for daily, weekly and monthly summaries. It tracks download/upload bandwidth as well as latency, jitter and packet loss.

spdMerlin is an internet speedtest and monitoring tool for AsusWRT Merlin with charts for daily, weekly and monthly summaries. It tracks download/upload bandwidth as well as latency, jitter and pac...

github.com

 

[swejuggalo]

I don't know the answer. It does seem wrong to have such a different behavior between the WebUI and the CLI menus but, again, I don't know if that's by designed or an error.

Frankly, I don't use the spdMerlin at all, so I'm not really familiar with all the settings and configuration options. If you want me to take a look, you'll need to provide more details and context (e.g. screenshots between WebUI and CLI, clear instructions to recreate the issue, the expected outcome, any logs, etc.). Without any details & context, I honestly have no idea how the "AutoBW configuration" is supposed to work.

Change, save, poof gone and reverts to this (above). It will be fine (save at configured in GUI) according to what I set up here (below).

So, looks like being turned off and in default state in the router interface and correct inside AMTM.
(this is not a new issue or limited to my specific router or script combination, but now, since it's revived I felt like it might be possible to solve again)

 

[Martinski]

Release Notes for spdMerlin v4.4.9 production release now available
[2025-Jun-03]

1) FIXED: Any parameter changes made in the WebUI "AutoBW Configuration" section were reset back to defaults after applying "Save" even though the new setup changes were actually saved and shown correctly in the CLI menu.


The fork from @Jack Yaz's repository is now hosted on the AMTM-OSR GitHub repo:

GitHub - AMTM-OSR/spdMerlin: spdMerlin is an internet speedtest and monitoring tool for AsusWRT Merlin with charts for daily, weekly and monthly summaries. It tracks download/upload bandwidth as well as latency, jitter and packet loss.

spdMerlin is an internet speedtest and monitoring tool for AsusWRT Merlin with charts for daily, weekly and monthly summaries. It tracks download/upload bandwidth as well as latency, jitter and pac...

github.com

 

[itibi]

Hi! Networkers,

Running spdmerlin 4.4.8 on old RT-AC3200
and having warnings/errors
AMTM 6.0.1 RT-AC3200 (armv7l) Kernel-2.6.36.4
FW-384.13_10 Operation Mode: Wireless router

interface 2. WAN
mode 1. Auto-select

[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error
Starting speedtest using auto-selected server for WAN interface. Please wait...


Speedtest by Ookla

Server: Fibrenoire Internet - Montréal, QC (id = 911)
ISP: EBOX
Latency: 2.29 ms (0.19 ms jitter)
Download: 302.29 Mbps (data used: 155.3 MB )
Upload: 406.89 Mbps (data used: 507.6 MB )
Packet Loss: Not available.
Result URL: https://www.speedtest.net/result/c/1a999303-d4b4-41c4-b6dc-aa053f7a5d25

Tue Jun 3 11:31:33 2025
Speedtest results - Download: 302.29 Mbps (data used: 155.3 MB ) - Upload: 406.89 Mbps (data used: 507.6 MB )

Connection quality - Latency: 2.29 ms (0.19 ms jitter) - Packet Loss: Not available.

Retrieving data for WebUI charts...

This last step takes over 2 minutes to terminate

Press <Enter> key to continue...

Can you help ?
Thanks

 

[Martinski]

View attachment 66087
Change, save, poof gone and reverts to this (above). It will be fine (save at configured in GUI) according to what I set up here (below).
View attachment 66088
So, looks like being turned off and in default state in the router interface and correct inside AMTM.
(this is not a new issue or limited to my specific router or script combination, but now, since it's revived I felt like it might be possible to solve again)

This morning, I took a look at your screenshots, and the current behavior indeed seemed very wrong. So I checked the code and found the source of the bug, which is now fixed in the latest v4.4.9 production release.

Great catch, BTW. Thanks for reporting it.

 

[itibi]

Here is the same test with newer version 4.4.9
[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error
Starting speedtest using auto-selected server for WAN interface. Please wait...


Speedtest by Ookla

Server: Bell Mobility - Montréal, QC (id = 16754)
ISP: EBOX
Latency: 2.23 ms (0.33 ms jitter)
Download: 297.11 Mbps (data used: 164.1 MB )
Upload: 414.21 Mbps (data used: 527.3 MB )
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/1e138edd-5fd9-422c-b7a6-55f4fd85c73e

Tue Jun 3 11:53:36 2025
Speedtest results - Download: 297.11 Mbps (data used: 164.1 MB ) - Upload: 414.21 Mbps (data used: 527.3 MB )

Connection quality - Latency: 2.23 ms (0.33 ms jitter) - Packet Loss: 0.0%

Retrieving data for WebUI charts..

- Packet lost is now correctly detected
- still bad number error
- retrieving data still slow.

Thanks for your support.

 

[visortgw]

@Martinski: Can you please look into persistence of GUI configuration when you have a chance? This used to work, but it has been broken for a long time (several versions). For example, if I select Logarithmic for Scale type on graphs, it reverts to Linear with the next browser session. The same is true for Toggle Lines state. The same us similarly true for connmon.

 

[swejuggalo]

This morning, I took a look at your screenshots, and the current behavior indeed seemed very wrong. So I checked the code and found the source of the bug, which is now fixed in the latest v4.4.9 production release.

Great catch, BTW. Thanks for reporting it.

Great. Thanks. Looking forward to test and possibly find more bugs.

 

[maghuro]

Here happens the same error that happens on ntpmerlin:

ntpMerlin - ntpMerlin v3.4.7 - NTP Time Server for AsusWRT Merlin

Release Notes for ntpMerlin v3.4.7 production release now available [2025-May-29] The fork from @Jack Yaz's repository is now hosted on the AMTM-OSR GitHub repo: https://github.com/AMTM-OSR/ntpMerlin 1) FIXED: Errors when loading the webGUI page on the 3006.102.x F/W version. 2) FIXED: Bug...

www.snbforums.com

 

[itibi]

Hi!

My problem is the following :

Running spdmerlin 4.4.9 on old RT-AC3200
AMTM 6.0.1 RT-AC3200 (armv7l) Kernel-2.6.36.4
FW-384.13_10 Operation Mode: Wireless router

run speedtest now ; interface WAN ; mode Auto-select

[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error

Starting speedtest using auto-selected server for WAN interface. Please wait...
... cut ...

Any help will be appreciated.
Thanks

 

[Martinski]

@Martinski: Can you please look into persistence of GUI configuration when you have a chance? This used to work, but it has been broken for a long time (several versions). For example, if I select Logarithmic for Scale type on graphs, it reverts to Linear with the next browser session. The same is true for Toggle Lines state. The same us similarly true for connmon.

I'll be very busy for the next couple of days, so I'll take a look at this over the weekend. BTW, I don't recall ever seeing code that explicitly saves that kind of WebGUI chart/graph parameter settings, but I could be wrong since I have not been looking for it up to this point.

 

[Martinski]

Hi!

My problem is the following :

Running spdmerlin 4.4.9 on old RT-AC3200
AMTM 6.0.1 RT-AC3200 (armv7l) Kernel-2.6.36.4
FW-384.13_10 Operation Mode: Wireless router

run speedtest now ; interface WAN ; mode Auto-select

[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error

Starting speedtest using auto-selected server for WAN interface. Please wait...
... cut ...

Any help will be appreciated.
Thanks

Thanks for reporting the issue. Please post the full output from the operation done via SSH CLI (clear & readable screenshots or a text file would be OK).

And as I already noted in a previous post:

NOTE:
Do *not* edit the output or log to show only what you believe is relevant. More details and context around the issue are needed. Your custom configuration file may also be useful to see.

Thanks.

 

[iTyPsIDg]

@Martinski: Can you please look into persistence of GUI configuration when you have a chance? This used to work, but it has been broken for a long time (several versions). For example, if I select Logarithmic for Scale type on graphs, it reverts to Linear with the next browser session. The same is true for Toggle Lines state. The same us similarly true for connmon.

Those options are typically saved as a cookie in your browser. Your security permissions or browser cookie settings may not be saving your settings.

 

[itibi]

Thanks for reporting the issue. Please post the full output from the operation done via SSH CLI (clear & readable screenshots or a text file would be OK).

And as I already noted in a previous post:


Thanks.

You're right. sorry. Here is the output:
# amtm
amtm 6.0.1 by thelonelycoder

RT-AC3200 (armv7l) Kernel-2.6.36.4
FW-384.13_10 @ 192.168.1.1
Operation Mode: Wireless router
Wed Jun 4 12:17:57 DST 2025

amtm - the Asuswrt-Merlin Terminal Menu

/mnt/Share_disk Size 56.4G Used 3.1G (6%)

rt open RTRMON 2.1.5

j2 open ntpMerlin 3.4.7
j3 open scMerlin 2.5.30
j4 open spdMerlin 4.4.9

ep manage Entware packages

em open Email settings
sc manage Scripts update notification

dc manage Disk check script dcl show log
fd run Format disk fdl show log
rs manage Reboot scheduler 15 @ 9:00

sh manage Shell history
rd manage Router date keeper
sw manage Swap file /mnt/Share_disk 2.0G

cj show all cron jobs
i show available scripts

amtm options
u update rr reboot
e exit t theme r reset a about
_____________________________________________

Enter amtm option j4

################################################################
## _ __ __ _ _ ##
## | || \/ | | |(_) ##
## ___ _ __ __| || \ / | ___ _ __ | | _ _ __ ##
## / __|| '_ \ / _ || |\/| | / _ \| '__|| || || '_ \ ##
## \__ \| |_) || (_| || | | || __/| | | || || | | | ##
## |___/| .__/ \__,_||_| |_| \___||_| |_||_||_| |_| ##
## | | ##
## |_| ##
## ##
## v4.4.9 on RT-AC3200 ##
## ##
## https://github.com/AMTM-OSR/spdMerlin ##
## Forked from: https://github.com/jackyaz/spdMerlin ##
## ##
################################################################

WebUI for spdMerlin is available at:
http://.home/user4.asp

1. Run a speedtest now
Database size: 700.0KB

2. Choose a preferred server for an interface

3. Toggle automatic speedtests
Currently: ENABLED

4. Configure schedule for automatic speedtests
Currently: Every hour, Minutes: 12,42 - Every day

5. Toggle time output mode
Currently: non-unix time values will be used for CSV exports

6. Toggle storage of speedtest result URLs
Currently: DISABLED

7. Set number of speedtest results to show in WebUI
Currently: 10 results will be shown

8. Set number of days data to keep in database
Currently: 30 days data will be kept

9. Toggle between built-in Ookla speedtest and speedtest-cli
Currently: external binary will be used for speedtests

c. Customise list of interfaces for automatic speedtests
r. Reset list of interfaces for automatic speedtests to default

s. Toggle storage location for stats and config
Current location: JFFS
JFFS Available: 44.40MB [69.4%]

q. Toggle exclusion of spdMerlin speedtests from QoS
Currently: spdMerlin speedtests are excluded from QoS

a. AutoBW

u. Check for updates
uf. Update spdMerlin with latest version (force update)

rs. Reset spdMerlin database / delete all data

e. Exit spdMerlin

z. Uninstall spdMerlin

####################################################################

Choose an option: 1

################################################################
## _ __ __ _ _ ##
## | || \/ | | |(_) ##
## ___ _ __ __| || \ / | ___ _ __ | | _ _ __ ##
## / __|| '_ \ / _ || |\/| | / _ \| '__|| || || '_ \ ##
## \__ \| |_) || (_| || | | || __/| | | || || | | | ##
## |___/| .__/ \__,_||_| |_| \___||_| |_||_||_| |_| ##
## | | ##
## |_| ##
## ##
## v4.4.9 on RT-AC3200 ##
## ##
## https://github.com/AMTM-OSR/spdMerlin ##
## Forked from: https://github.com/jackyaz/spdMerlin ##
## ##
################################################################

Choose an interface to speedtest:

1. All
2. WAN

Choose an option (e=Exit): 2

What mode would you like to use?

1. Auto-select
2. Preferred server
3. Choose a server

Choose an option (e=Exit): 1

[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error
Starting speedtest using auto-selected server for WAN interface. Please wait...


Speedtest by Ookla

Server: Altima Telecom - Montréal, QC (id = 38690)
ISP: EBOX
Latency: 2.38 ms (0.14 ms jitter)
Download: 296.17 Mbps (data used: 366.0 MB )
Upload: 413.21 Mbps (data used: 752.4 MB )
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/99cb2e51-7cac-4ee3-bc93-53979579e4b2

Wed Jun 4 12:18:56 2025
Speedtest results - Download: 296.17 Mbps (data used: 366.0 MB ) - Upload: 413.21 Mbps (data used: 752.4 MB )

Connection quality - Latency: 2.38 ms (0.14 ms jitter) - Packet Loss: 0.0%

Retrieving data for WebUI charts...


Press <Enter> key to continue...

 

[swejuggalo]

You're right. sorry. Here is the output:
# amtm
amtm 6.0.1 by thelonelycoder

RT-AC3200 (armv7l) Kernel-2.6.36.4
FW-384.13_10 @ 192.168.1.1
Operation Mode: Wireless router
Wed Jun 4 12:17:57 DST 2025

amtm - the Asuswrt-Merlin Terminal Menu

/mnt/Share_disk Size 56.4G Used 3.1G (6%)

rt open RTRMON 2.1.5

j2 open ntpMerlin 3.4.7
j3 open scMerlin 2.5.30
j4 open spdMerlin 4.4.9

ep manage Entware packages

em open Email settings
sc manage Scripts update notification

dc manage Disk check script dcl show log
fd run Format disk fdl show log
rs manage Reboot scheduler 15 @ 9:00

sh manage Shell history
rd manage Router date keeper
sw manage Swap file /mnt/Share_disk 2.0G

cj show all cron jobs
i show available scripts

amtm options
u update rr reboot
e exit t theme r reset a about
_____________________________________________

Enter amtm option j4

################################################################
## _ __ __ _ _ ##
## | || \/ | | |(_) ##
## ___ _ __ __| || \ / | ___ _ __ | | _ _ __ ##
## / __|| '_ \ / _ || |\/| | / _ \| '__|| || || '_ \ ##
## \__ \| |_) || (_| || | | || __/| | | || || | | | ##
## |___/| .__/ \__,_||_| |_| \___||_| |_||_||_| |_| ##
## | | ##
## |_| ##
## ##
## v4.4.9 on RT-AC3200 ##
## ##
## https://github.com/AMTM-OSR/spdMerlin ##
## Forked from: https://github.com/jackyaz/spdMerlin ##
## ##
################################################################

WebUI for spdMerlin is available at:
http://.home/user4.asp

1. Run a speedtest now
Database size: 700.0KB

2. Choose a preferred server for an interface

3. Toggle automatic speedtests
Currently: ENABLED

4. Configure schedule for automatic speedtests
Currently: Every hour, Minutes: 12,42 - Every day

5. Toggle time output mode
Currently: non-unix time values will be used for CSV exports

6. Toggle storage of speedtest result URLs
Currently: DISABLED

7. Set number of speedtest results to show in WebUI
Currently: 10 results will be shown

8. Set number of days data to keep in database
Currently: 30 days data will be kept

9. Toggle between built-in Ookla speedtest and speedtest-cli
Currently: external binary will be used for speedtests

c. Customise list of interfaces for automatic speedtests
r. Reset list of interfaces for automatic speedtests to default

s. Toggle storage location for stats and config
Current location: JFFS
JFFS Available: 44.40MB [69.4%]

q. Toggle exclusion of spdMerlin speedtests from QoS
Currently: spdMerlin speedtests are excluded from QoS

a. AutoBW

u. Check for updates
uf. Update spdMerlin with latest version (force update)

rs. Reset spdMerlin database / delete all data

e. Exit spdMerlin

z. Uninstall spdMerlin

####################################################################

Choose an option: 1

################################################################
## _ __ __ _ _ ##
## | || \/ | | |(_) ##
## ___ _ __ __| || \ / | ___ _ __ | | _ _ __ ##
## / __|| '_ \ / _ || |\/| | / _ \| '__|| || || '_ \ ##
## \__ \| |_) || (_| || | | || __/| | | || || | | | ##
## |___/| .__/ \__,_||_| |_| \___||_| |_||_||_| |_| ##
## | | ##
## |_| ##
## ##
## v4.4.9 on RT-AC3200 ##
## ##
## https://github.com/AMTM-OSR/spdMerlin ##
## Forked from: https://github.com/jackyaz/spdMerlin ##
## ##
################################################################

Choose an interface to speedtest:

1. All
2. WAN

Choose an option (e=Exit): 2

What mode would you like to use?

1. Auto-select
2. Preferred server
3. Choose a server

Choose an option (e=Exit): 1

[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error
Starting speedtest using auto-selected server for WAN interface. Please wait...


Speedtest by Ookla

Server: Altima Telecom - Montréal, QC (id = 38690)
ISP: EBOX
Latency: 2.38 ms (0.14 ms jitter)
Download: 296.17 Mbps (data used: 366.0 MB )
Upload: 413.21 Mbps (data used: 752.4 MB )
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/99cb2e51-7cac-4ee3-bc93-53979579e4b2

Wed Jun 4 12:18:56 2025
Speedtest results - Download: 296.17 Mbps (data used: 366.0 MB ) - Upload: 413.21 Mbps (data used: 752.4 MB )

Connection quality - Latency: 2.38 ms (0.14 ms jitter) - Packet Loss: 0.0%

Retrieving data for WebUI charts...


Press <Enter> key to continue...

Same steps on my router does not seem to trigger an issue.

 

[Martinski]

You're right. sorry. Here is the output:
# amtm
amtm 6.0.1 by thelonelycoder

RT-AC3200 (armv7l) Kernel-2.6.36.4
FW-384.13_10 @ 192.168.1.1
Operation Mode: Wireless router
Wed Jun 4 12:17:57 DST 2025

amtm - the Asuswrt-Merlin Terminal Menu

/mnt/Share_disk Size 56.4G Used 3.1G (6%)

rt open RTRMON 2.1.5

j2 open ntpMerlin 3.4.7
j3 open scMerlin 2.5.30
j4 open spdMerlin 4.4.9

ep manage Entware packages

em open Email settings
sc manage Scripts update notification

dc manage Disk check script dcl show log
fd run Format disk fdl show log
rs manage Reboot scheduler 15 @ 9:00

sh manage Shell history
rd manage Router date keeper
sw manage Swap file /mnt/Share_disk 2.0G

cj show all cron jobs
i show available scripts

amtm options
u update rr reboot
e exit t theme r reset a about
_____________________________________________

Enter amtm option j4

################################################################
## _ __ __ _ _ ##
## | || \/ | | |(_) ##
## ___ _ __ __| || \ / | ___ _ __ | | _ _ __ ##
## / __|| '_ \ / _ || |\/| | / _ \| '__|| || || '_ \ ##
## \__ \| |_) || (_| || | | || __/| | | || || | | | ##
## |___/| .__/ \__,_||_| |_| \___||_| |_||_||_| |_| ##
## | | ##
## |_| ##
## ##
## v4.4.9 on RT-AC3200 ##
## ##
## https://github.com/AMTM-OSR/spdMerlin ##
## Forked from: https://github.com/jackyaz/spdMerlin ##
## ##
################################################################

WebUI for spdMerlin is available at:
http://.home/user4.asp

1. Run a speedtest now
Database size: 700.0KB

2. Choose a preferred server for an interface

3. Toggle automatic speedtests
Currently: ENABLED

4. Configure schedule for automatic speedtests
Currently: Every hour, Minutes: 12,42 - Every day

5. Toggle time output mode
Currently: non-unix time values will be used for CSV exports

6. Toggle storage of speedtest result URLs
Currently: DISABLED

7. Set number of speedtest results to show in WebUI
Currently: 10 results will be shown

8. Set number of days data to keep in database
Currently: 30 days data will be kept

9. Toggle between built-in Ookla speedtest and speedtest-cli
Currently: external binary will be used for speedtests

c. Customise list of interfaces for automatic speedtests
r. Reset list of interfaces for automatic speedtests to default

s. Toggle storage location for stats and config
Current location: JFFS
JFFS Available: 44.40MB [69.4%]

q. Toggle exclusion of spdMerlin speedtests from QoS
Currently: spdMerlin speedtests are excluded from QoS

a. AutoBW

u. Check for updates
uf. Update spdMerlin with latest version (force update)

rs. Reset spdMerlin database / delete all data

e. Exit spdMerlin

z. Uninstall spdMerlin

####################################################################

Choose an option: 1

################################################################
## _ __ __ _ _ ##
## | || \/ | | |(_) ##
## ___ _ __ __| || \ / | ___ _ __ | | _ _ __ ##
## / __|| '_ \ / _ || |\/| | / _ \| '__|| || || '_ \ ##
## \__ \| |_) || (_| || | | || __/| | | || || | | | ##
## |___/| .__/ \__,_||_| |_| \___||_| |_||_||_| |_| ##
## | | ##
## |_| ##
## ##
## v4.4.9 on RT-AC3200 ##
## ##
## https://github.com/AMTM-OSR/spdMerlin ##
## Forked from: https://github.com/jackyaz/spdMerlin ##
## ##
################################################################

Choose an interface to speedtest:

1. All
2. WAN

Choose an option (e=Exit): 2

What mode would you like to use?

1. Auto-select
2. Preferred server
3. Choose a server

Choose an option (e=Exit): 1

[: 0
0: bad number
/jffs/scripts/spdmerlin: line 5531: arithmetic syntax error
Starting speedtest using auto-selected server for WAN interface. Please wait...


Speedtest by Ookla

Server: Altima Telecom - Montréal, QC (id = 38690)
ISP: EBOX
Latency: 2.38 ms (0.14 ms jitter)
Download: 296.17 Mbps (data used: 366.0 MB )
Upload: 413.21 Mbps (data used: 752.4 MB )
Packet Loss: 0.0%
Result URL: https://www.speedtest.net/result/c/99cb2e51-7cac-4ee3-bc93-53979579e4b2

Wed Jun 4 12:18:56 2025
Speedtest results - Download: 296.17 Mbps (data used: 366.0 MB ) - Upload: 413.21 Mbps (data used: 752.4 MB )

Connection quality - Latency: 2.38 ms (0.14 ms jitter) - Packet Loss: 0.0%

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Thank you for the additional information. I'll send you a DM with instructions to download a test/debug version of the script to try to capture more debugging info as you recreate the problem.