# Help needed to diagnose ARV\_BUFFER\_STATUS\_SIZE\_MISMATCH

**URL:** <https://aravis-project.discourse.group/t/help-needed-to-diagnose-arv-buffer-status-size-mismatch/946>\
**Category:** Using Aravis\
**Created:** [September 23, 2025, 5:08pm UTC](https://aravis-project.discourse.group/t/help-needed-to-diagnose-arv-buffer-status-size-mismatch/946 "2025-09-23T17:08:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![mduran-earthrover](https://avatars.discourse-cdn.com/v4/letter/m/3ab097/32.png) [@mduran-earthrover](https://aravis-project.discourse.group/u/mduran-earthrover)\
**Post date:** [September 23, 2025, 5:08pm UTC](https://aravis-project.discourse.group/t/help-needed-to-diagnose-arv-buffer-status-size-mismatch/946/1 "2025-09-23T17:08:41Z")

</div>

Hello,

I’m trying to diagnose a `ARV_BUFFER_STATUS_SIZE_MISMATCH` that appears in a, for the moment, unknown circumstance.

**Background:**

- aravis: 0.8.30
- Camera connection: USB3 async (unable to work in sync mode)
- Target setup:
  - 2 cameras of the same model working in parallel with synchronized triggering
  - Host computer: Nvidia Jetson Orin (with a vendor carrier, not the devkit)

**Issue:**  
Suddenly some buffers arrive with status `ARV_BUFFER_STATUS_SIZE_MISMATCH`, this happens on both cameras at the same time for a couple of frames.

**Things that I’ve tried/tested:**

- Single camera: results in no issue (at least not observed in a reasonable time)
- Different host computer:
  - Laptops (x64): I’ve tested with different laptops and got varying results, on some works without issue, on others the issue persists with different “frequencies” between errors
  - Raspberry Pi 5 (arm64): no issue (at least not observed in a reasonable time)

- Increase thread priority / realtime
- Separate processes for each camera / single process with both of them (feels like it gives less issues and less random on appearance)
- Increase the aravis log level: reports “🆆 stream-thread\> Unexpected total payload size (received XXXXXXX - expected 6410688)” with the received part changing almost always
- Check that there are enough buffers available: when that buffer is received, there are always \>1 buffers on the input queue
- Check if when starts failing fails until reboot: the issue appears for a couple of frames and recovers itself, doesn’t have a “fixed” period neither on frames nor time between issues.
- Check the dmesg / syslog: nothing obvious appears
- Update the camera driver: no luck
- Try newer aravis version: no luck either

**Reproducible with:**

```bash
# terminal 1
ARV_DEBUG=stream-thread:2 arv-camera-test-0.8 -n "<cam1>" --usb-mode=async -o 20 -e 500

# terminal 2
ARV_DEBUG=stream-thread:2 arv-camera-test-0.8 -n "<cam2>" --usb-mode=async -o 20 -e 500

```

At this point I could really use some help to debug / keep digging on the issue. Any ideas?

Thanks in advance.