On 2016-08-25 13:45:29 -0400, Robert Haas wrote:
> I think you may be forgetting that "the base 3 WAL segments" is no
> longer the default configuration.  checkpoint_segments=3 is history;
> we now have max_wal_size=1GB, which is a maximum of 64 WAL segments,
> not 3.

Well, but min_wal_size still is 48MB. So sure, if you consistently have
a high WAL throughput, it'll be bigger. But otherwise pg_xlog will
shrink again.

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