Hi, On 2017-10-31 18:43:10 +0900, Kyotaro HORIGUCHI wrote: > - distance: > how many bytes LSN can advance before the margin defined by > max_slot_wal_keep_size (and wal_keep_segments) is exhasuted, > or how many bytes this slot have lost xlog from restart_lsn.
I don't think 'distance' is a good metric - that's going to continually change. Why not store the LSN that's available and provide a function that computes this? Or just rely on the lsn - lsn operator? - Andres -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers