Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Wed, 12 Feb 2025 10:36:07 GMT

Hi,

[quote user="PedroR"]I have changed the SIM and now I have the same results as you.[/quote]

Thank you for letting me know.

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Wed, 12 Feb 2025 07:24:33 GMT

Hi Dejan,

Thanks for your patience. I have changed the SIM and now I have the same results as you. Thanks for the help, it showed me the path, I always distrust myself firstly...

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Tue, 11 Feb 2025 15:33:47 GMT

Hi,

I have tested your project by building for thingy91/nrf9160/ns board target in NCS v2.8.0. Here is the result

[00:00:57.018,646] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:00:58.010,040] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:00:59.009,887] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:00.010,406] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:01.019,226] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:02.019,012] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:03.018,829] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:04.019,622] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:05.019,439] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:06.010,833] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:07.011,260] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:01:08.010,803] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:09.019,622] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:10.019,409] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:11.019,226] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:12.010,772] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:13.019,531] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:14.010,925] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:15.011,383] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:16.011,901] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:17.020,721] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:18.021,514] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:19.021,331] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:20.021,118] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:21.020,935] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:22.013,336] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:23.013,671] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:24.014,190] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:01:25.022,003] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:26.021,789] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:27.022,613] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:28.022,399] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:29.022,216] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:30.013,610] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:31.013,977] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:32.013,519] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:33.022,338] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:34.022,125] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:35.021,942] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:36.022,735] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:37.023,559] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:38.014,953] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:39.015,625] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:40.016,143] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:01:41.023,956] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:42.024,749] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:43.025,573] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:44.025,360] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:45.025,177] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:46.016,571] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:47.017,089] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:01:48.016,601] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:49.025,421] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:50.025,207] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:51.025,024] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:52.024,810] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:53.025,634] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:54.017,028] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:55.016,540] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:01:56.017,059] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:01:57.024,871] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:01:58.025,665] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:01:59.025,482] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:00.025,238] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:01.025,054] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:02.016,448] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:03.016,937] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:04.017,486] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:05.026,306] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:06.026,062] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:07.025,878] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:08.026,641] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:09.026,458] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:10.017,852] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:11.018,371] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:12.017,883] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:13.026,702] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:14.026,458] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:15.026,275] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:16.026,031] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:17.025,848] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:18.018,249] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:19.017,730] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:20.018,280] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:21.026,092] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:22.025,848] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:23.026,672] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:24.026,458] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:25.026,275] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:26.017,669] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:27.018,157] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:28.017,700] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:29.026,519] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:30.026,275] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:31.026,092] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:32.025,878] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:33.026,702] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:34.018,096] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:35.017,578] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:36.018,096] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:37.025,909] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:38.026,702] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:39.027,557] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:40.027,343] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:41.027,160] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:42.018,554] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:43.019,042] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:02:44.018,554] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:45.027,374] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:46.027,130] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:47.026,947] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:48.027,740] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:49.028,564] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:50.019,958] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:51.020,446] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:52.020,996] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:53.028,808] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:54.029,571] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:55.029,388] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:56.029,144] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:02:57.028,961] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:02:58.021,362] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:02:59.021,850] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms
[00:03:00.022,369] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 2ms
[00:03:01.030,181] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:03:02.029,937] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:03:03.030,761] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 9ms
[00:03:04.031,524] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:03:05.031,372] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 10ms
[00:03:06.022,888] <inf> Proxy:   --> sent a chunk of 3056 bytes (send no. 1, total sent = 3056) - 1ms

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Tue, 11 Feb 2025 15:01:41 GMT

I am using the vs code extension. When I do the build, this is the command:

* Executing task: nRF Connect: Build: proxy-usb-udp/build

Building proxy-usb-udp
west build --build-dir /project-dir/build /project-dir

[0/22] Performing build step for 'tfm'
ninja: no work to do.
[4/10] Building C object CMakeFiles/app.dir/src/main.c.obj
/project-dir/src/main.c: In function 'main':
/project-dir/src/main.c:143:9: warning: unused variable 'ret' [-Wunused-variable]
143 |     int ret;
      |         ^~~
In file included from /project-dir/src/main.c:18:
/project-dir/src/tcp.h: At top level:
/project-dir/src/tcp.h:18:32: warning: 'server' defined but not used [-Wunused-variable]
   18 | static struct sockaddr_storage server;
      |                                ^~~~~~
/project-dir/src/tcp.h:16:32: warning: 'socket_transmission_work' defined but not used [-Wunused-variable]
   16 | static struct k_work_delayable socket_transmission_work;
      |                                ^~~~~~~~~~~~~~~~~~~~~~~~
[10/10] Linking C executable zephyr/zephyr.elf
Memory region         Used Size Region Size %age Used
           FLASH:       83128 B       372 KB     21.82%
             RAM:       63634 B     211736 B     30.05%
        IDT_LIST:          0 GB        32 KB      0.00%
Generating files from /project-dir/build/proxy-usb-udp/zephyr/zephyr.elf for board: thingy91
image.py: sign the payload
image.py: sign the payload
[10/10] Generating ../merged.hex
* Terminal will be reused by tasks, press any key to close it.

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Tue, 11 Feb 2025 14:49:46 GMT

Hi,

Thank you for providing the project file.

Can you also share your "west build" command? Your previously shared command did not include the board target.

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Tue, 11 Feb 2025 14:42:29 GMT

Thank you.

devzone.nordicsemi.com/.../0172.project.zip

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Tue, 11 Feb 2025 14:24:12 GMT

Hi,

You provided previously the link to main.c file. Could you send your full project including build folder? You can send your project in zip format by clicking on Insert -> Image/video/file -> Upload.

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Tue, 11 Feb 2025 12:22:55 GMT

It's not a specific sample, I shared my code, based on examples of TCP clients. I want to use TCP, but the project firstly is called udp, which is possibly confusing.

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Tue, 11 Feb 2025 12:05:03 GMT

Hi,

In one of your previous replies, there was this command "west build --build-dir /***/proxy-usb-udp/build /***/proxy-usb-udp".
Which specific sample did you build? Is your application based on any of the NCS samples?

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Tue, 11 Feb 2025 07:46:09 GMT

Sorry but I can't fix it.

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Fri, 07 Feb 2025 16:47:00 GMT

Hi,

Thank you for additional information.

CONFIG_NRF_MODEM_LIB_SHMEM_TX_SIZE is the amount of shared memory owned by the application and used for sending the data to the modem. The RX/TX must fit the data for the largest command or socket operation executed.

This area holds all outgoing data from the application to the modem, e.g. buffers passed to `send()`, AT commands. The size must be a multiple of four to keep the memory partitions word-aligned.

You can find more information about memory regions of the modem library in the documentation.

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Fri, 07 Feb 2025 10:11:43 GMT

I think it is depending on this configuration variable:

CONFIG_NRF_MODEM_LIB_SHMEM_TX_SIZE
When is settled to 8192:
I: 4480ms Sent: 1ms 3083bytes
I: 5480ms Sent: 1ms 3083bytes
I: RRC mode: Idle
I: RRC mode: Connected
I: 6480ms Sent: 6492ms 3083bytes
I: 12975ms Sent: 981ms 3083bytes
I: RRC mode: Idle
I: RRC mode: Connected
I: 13975ms Sent: 7475ms 3083bytes
I: 21453ms Sent: 1335ms 3083bytes
I: 22791ms Sent: 1884ms 3083bytes
I: 24678ms Sent: 4589ms 3083bytes
I: 29270ms Sent: 1387ms 3083bytes
I: 30660ms Sent: 1493ms 3083bytes
I: 32156ms Sent: 1387ms 3083bytes
I: RRC mode: Idle
I: RRC mode: Connected
I: 33546ms Sent: 6309ms 3083bytes
I: RRC mode: Idle
I: RRC mode: Connected
I: 39858ms Sent: 5036ms 3083bytes
I: 44897ms Sent: 1476ms 3083bytes
I: 46376ms Sent: 2060ms 3083bytes
I: 48439ms Sent: 1534ms 3083bytes
I: 49976ms Sent: 1630ms 3083bytes
I: 51609ms Sent: 2265ms 3083bytes
I: 53877ms Sent: 1411ms 3083bytes
I: 55291ms Sent: 1655ms 3083bytes
3083 * 2 good sents = 6166 -> 8192 - 6166 = 2026 < 3083
And with 32768:
I: 3365ms Sent: 2ms 3083bytes
I: 4365ms Sent: 2ms 3083bytes
I: 5365ms Sent: 1ms 3083bytes
I: 6366ms Sent: 0ms 3083bytes
I: 7366ms Sent: 0ms 3083bytes
I: 8366ms Sent: 1ms 3083bytes
I: RRC mode: Idle
I: 9367ms Sent: 0ms 3083bytes
I: RRC mode: Connected
I: 10367ms Sent: 44ms 3083bytes
I: 11367ms Sent: 1ms 3083bytes
I: 12367ms Sent: 8ms 3083bytes 
I: RRC mode: Idle
I: RRC mode: Connected
I: 13367ms Sent: 5843ms 3083bytes
I: 19213ms Sent: 1045ms 3083bytes
I: RRC mode: Idle
I: RRC mode: Connected
I: 20261ms Sent: 6629ms 3083bytes
3083 * 10 good sents = 30830 -> 32768 - 30830 = 1938 < 3083
To be honest, I am new with nordic boards, so I cannot understand it well, surely. If you can help me, I will be thankful.

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Fri, 07 Feb 2025 09:07:43 GMT

Yes I am using a Thingy91.

*** Booting nRF Connect SDK v2.9.0-7787b2649840 ***
*** Using Zephyr OS v3.7.99-1f8f3dc29142 ***
I: Initializing modem library
I: Disabling PSM and eDRX
I: Connecting to LTE network
I: RRC mode: Connected
I: Network registration status: Connected - home network
I: Connected to LTE network
I: Resolving server name: x, port: x
I: IPv4 Address found x
I: Creating socket
I: Connecting to server
I: Successfully connected to server
I: UART Proxy
I: 3727ms Sent: 1ms 1053bytes
I: 4027ms Sent: 0ms 1053bytes
I: 4327ms Sent: 0ms 1053bytes
I: 4627ms Sent: 1ms 1053bytes
I: 4927ms Sent: 0ms 1053bytes
I: 5227ms Sent: 0ms 1053bytes
I: 5527ms Sent: 1ms 1053bytes
I: 5828ms Sent: 0ms 1053bytes
I: 6128ms Sent: 1ms 1053bytes
I: 6428ms Sent: 1ms 1053bytes
I: 6728ms Sent: 0ms 1053bytes
I: RRC mode: Idle
I: RRC mode: Connected
I: 7028ms Sent: 6228ms 1053bytes
I: 13259ms Sent: 0ms 1053bytes
I: 13559ms Sent: 1271ms 1053bytes
I: 14833ms Sent: 0ms 1053bytes
I: 15133ms Sent: 447ms 1053bytes
I: 15583ms Sent: 0ms 1053bytes
I: 15883ms Sent: 403ms 1053bytes
I: 16289ms Sent: 4465ms 1053bytes
I: 20757ms Sent: 1451ms 1053bytes
I: 22211ms Sent: 0ms 1053bytes
I: 22511ms Sent: 447ms 1053bytes
I: 22961ms Sent: 1005ms 1053bytes
I: 23969ms Sent: 271ms 1053bytes
I: 24269ms Sent: 0ms 1053bytes
I: 24569ms Sent: 351ms 1053bytes
I: 24923ms Sent: 757ms 1053bytes
I: 25683ms Sent: 5392ms 1053bytes
I: 31078ms Sent: 0ms 1053bytes
I: 31378ms Sent: 0ms 1053bytes
I: 31678ms Sent: 150ms 1053bytes
I: 31978ms Sent: 530ms 1053bytes
I: 32511ms Sent: 747ms 1053bytes
I: 33261ms Sent: 677ms 1053bytes

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Mon, 03 Feb 2025 08:37:56 GMT

Hi,

Which network do you use? Have you tried to use another network?

Is this issue reproducible on Thingy91?

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Thu, 30 Jan 2025 15:35:52 GMT

I don't have one.

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Thu, 30 Jan 2025 15:34:05 GMT

Hi,

Is your issue reproducible on nrf9160-dk board?

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Wed, 29 Jan 2025 15:10:30 GMT

I use the NRF Connect vs code extension. This release: nRF Connect SDK Toolchain v2.9, which executes this command:

* Executing task: nRF Connect: Build: proxy-usb-udp/build

Building proxy-usb-udp
west build --build-dir /***/proxy-usb-udp/build /***/proxy-usb-udp

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Wed, 29 Jan 2025 15:01:20 GMT

Hi,

Thank you for additional information.

Which NCS version do you use? Can you show your build command?

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Tue, 28 Jan 2025 14:28:30 GMT

It is similar to the lesson three program of the Cellular Course, but using TCP instead of UDP.

Code

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Tue, 28 Jan 2025 14:23:34 GMT

Hi,

Do you use any of the samples we provide as a basis for your application?

Best regards,
Dejan

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

PedroR — Mon, 27 Jan 2025 16:53:50 GMT

Hi Dejan,

I want to build a proxy usb to tcp, receiving samples of data every 100ms. I've just tested the communications. I am in Spain, using Movistar.

RE: Delays in Sending Data Over TCP on LTE Connection, Depending on Data Size with Thingy 91

dejans — Mon, 27 Jan 2025 16:51:44 GMT

Hi,

Can you provide some details about your application?

How long did you do the testing?

In which country did you do testing? Which network operator do you use?

Best regards,
Dejan