Hello Everyone,
I am seeking assistance with a performance regression observed on an i.MX6SOLO
rev 1.4 (996 MHz) board in our LAVA farm.
The Issue:
A test suite containing 90 test cases, which previously took 10 minutes to
complete, is now consistently taking 20 minutes. This issue is unique to
this one specific board; other boards of the same type are still completing
the run in 10 minutes using the same build/firmware.
Observations:
- I'm not using any test_character_delay externally in my YAML.
- Identical Logs: The "Fast" and "Slow" jobs produce identical serial
output.
- Recent Hangs: The test run has recently started to get stuck/hang
mid-run, even though CPU usage is not at 100%.
Debugging Performed:
- Verified that CPU thermal throttling is not active.
- Network latency and DNS resolution times appear normal.
- No hardware errors are reported in dmesg.
- Swapped power supplies and network cables with no improvement.
Questions:
1. What is the best way to debug "dead time" between lava-test-case
signals?
2. Could the LAVA worker be experiencing serial buffer delays on this
specific node that don't appear in the logs?
Thank you for your time.
Best Regards
Pavan Kumar
Hello LAVA users!
Debian 11 bullseye is nearing close to EOL (August 2026). We're
planning to retire LAVA support for it in the 2026.03 release. If that
breaks your setup and there is a good reason to keep the support for
longer, please respond to this message.
Dropping debian 11 will allow to remove a few workarounds in LAVA that
are currently included in the code.
Best Regards,
Milosz
