The daemon monitor thread drained output and then slept a fixed short
interval on every tick, waking several times a second for the life of
the node even long after startup, when the node emits almost nothing.
Stopping it also meant waiting out the current sleep before it saw the
stop flag.
- The monitor now waits on a condition variable instead of a plain
sleep, so a stop request wakes it immediately rather than after the
interval. The stop flag is set under the monitor's mutex so the wake
cannot be lost.
- The poll interval stays fast for the first 30 s after the thread
starts and for 3 s after any output, and otherwise doubles per idle
tick up to a 500 ms cap. Any new output drops it straight back to
fast, so responsiveness during startup, rescan and shutdown is
unchanged while a quiet node is polled far less often. The interval
choice is a pure function.
Tests cover the interval function across the warmup window, the
recent-data window, the reset on new output, the doubling, and the cap.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
DanSandClaude Opus 4.8
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