2010/11/1 hubert depesz lubaczewski <[email protected]>:

> as I understand, max number of xlog files in pg_xlog should be ( 1 + 2 *
> checkpoint_segments ).

why?

for a server overloaded with R/W transactions, it's possible to go beyond this.
checkpoints just do not keep up.
right now I have an 8.3 with checkpoint_segments=3, constantly running
pgbench and I see 8 WAL segments.

cheers
Filip

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