In our process of monitoring LAVA logs, we typically skip numerous
messages to enhance log clarity. We already exclude `feedback` messages
from display. These messages were just used as a heartbeat signal,
indicating that if we are receiving them, the Device Under Test (DUT) is
active.
Practically, if we continuously receive feedback messages without any
other message level (either `debug` or `target`) for several minutes,
this could be a cause for concern, as it likely indicates the device is
in a kind of livelock state.
Therefore, it is more prudent to ignore feedback messages, as they tend
to occur frequently in unstable scenarios. However, it's important to
note that any other message level will still be considered as a
heartbeat signal.
Real case where several minutes of feedback messages indicate a hang:
https://gitlab.freedesktop.org/mesa/mesa/-/jobs/53546660
Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26996>
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