pub const DEFAULT_SAMPLE_INTERVAL: Duration;Expand description
Default interval between FreeSpaceSampler polls.
Tradeoff: responsiveness (catching the dmg-stage high-water mark, which
can spike and recede within a couple of seconds) vs syscall frequency.
available_bytes is a single cheap statvfs/GetDiskFreeSpaceExW
syscall, so 2-3× more samples is negligible cost — and for a feature
that must NEVER silently under-report the peak, a 0.5s cadence
materially lowers the probability that the high-water mark falls
entirely between two polls. The DEFAULT_SAFETY_FACTOR (1.3×) remains
the cushion for any residual under-measure between samples. No env
override — the const is the single tuning point.