| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Simplifying replication |
| Date: | 2010-10-26 17:49:30 |
| Message-ID: | 4CC714AA.20204@agliodbs.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
> What happens if max_wal_size is less than checkpoint_segments?
> Currently a checkpoint tries to leave WAL files which were generated
> from the prior ckpt start to current ckpt end. Because those WAL files
> are required for crash recovery. But we should delete some of them
> according to max_wal_size?
The ideas is that max_wal_size would *replace* checkpoint_segments. The
checkpoint_segments setting is baffling to most PG DBAs.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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