Failed to find free syncpt error with OSD and dynamic pipeline

[ef.i.a]

I’ve used dynamic pipeline to write stream to new file every n seconds. Everything works fine, but if I enable OSD in that pipeline, I’ve got the following kernel error after about 10 minutes of execution:

host1x 50000000.host1x: nvhost_get_syncpt: failed to find free syncpt
falcon 54340000.vic: nvhost_get_syncpt_host_managed: failed to get syncpt

I’ve tried a patch from this solution but it doesn’t work for me.

My system parameters:

• Jetson Nano 2Gb
• JetPack 4.5.1-b17

Yeah, I can use smart video record to write a stream in a new file, but it has some limitation and is not suitable in my case.

I’ve wrote reproducible case consisting of a pipeline: source->streammux->demuxer->OSD->sink.
Code is based on DeepStream Reference Application - deepstream-app.

OSD_bug.zip (16.8 KB)

[yuweiw]

What is the version of deepstream? Could you update to the latest version and have a try?
We have fixed some similar memory problems in the latest version.

[ef.i.a]

Version of deepstream is 5.1.
Ok, I’ll try latest version of deepstream and come back.

[yuweiw]

1.You can try to update to deepstream 6.0 version first cause your board may not support the latest version.
2.You can try to increase the limit of fd with ulimit -n number cli.

[ef.i.a]

I’ve tried to decrease number of fd to set it to ulimit -n 128 (default value is 1024) and it crashes much faster.
Then I’ve installed Jetpack 4.6.1 on Jetson Nano with Deepstream 6.0.1 and such problem is gone. Also I did the same trick with fd, but everything is fine also. Thank you!