Re: Can PostgreSQL create new WAL files instead of reusing old ones?

David Pacheco wrote:
> tl;dr: We've found that under many conditions, PostgreSQL's re-use of old
> WAL
> files appears to significantly degrade query latency on ZFS.  The reason is
> complicated and I have details below.  Has it been considered to make this
> behavior tunable, to cause PostgreSQL to always create new WAL files
> instead of re-using old ones?

I don't think this has ever been proposed, because there was no use case
for it.  Maybe you want to work on a patch for it?

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services