* topology: wake the vacuum dispatcher when a worker frees quota
The dispatch loop slept a fixed 10s whenever every pending volume was
waiting for a per-server quota slot, so a sweep took volumes x 10s
regardless of how fast the compactions were. Workers now signal on a
buffered channel after crediting quota; the dispatcher waits on it with
the 10s sleep kept only as a timeout.
* master: add -vacuumIntervalSeconds to tune the automatic sweep interval
The 14-minute base interval was a literal inside the refresh loop while
every neighbouring vacuum knob was already a flag. Defaults to 840s,
unchanged.
* topology: keep the 14 minute floor on the vacuum interval
A zero-valued MasterOption or a negative -vacuumIntervalSeconds left the
sweep sleeping only its jitter, so treat non-positive intervals as the
previous default.
Chris LuandGitHub
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