Calle Wilund 6921210bf5 commitlog: Add counters for # bytes released/flush requested ...

Adds "bytes_released" and "bytes_flush_requested", representing
total bytes released from disk as a result of segment release
(as allocation bytes + overhead - not counting unused "waste"),
resp. total size we've requested flush callbacks to release data,
also counted as actual used bytes in segments we request be made
released.

These counters, together with bytes_written, should in ideal use
cases be at an equilibrium (actually equal), thus observing them
should give an idea on whether we are imbalanced in managing to
release bytes in same rate as they are allocated (i.e. transaction
rate).

2022-06-20 15:58:36 +00:00

104 KiB

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