| From: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
|---|---|
| To: | pgsql-docs <pgsql-docs(at)postgresql(dot)org> |
| Subject: | formula about the number of WAL files |
| Date: | 2010-10-14 03:00:02 |
| Message-ID: | AANLkTik0sqru9oMZeTL4vnFkAaDYZB=-Meonv9gnroiu@mail.gmail.com |
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| Thread: | |
| Lists: | pgsql-docs |
Hi,
----------------
29.4. WAL Configuration
There will always be at least one WAL segment file, and will normally not
be more than (2 + checkpoint_completion_target) * checkpoint_segments + 1
or checkpoint_segments + wal_keep_segments + 1 files.
----------------
The above formula is wrong. The correct is
(2 + checkpoint_completion_target) * checkpoint_segments +
wal_keep_segments + 1
The attached patch fixes this fault.
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
| Attachment | Content-Type | Size |
|---|---|---|
| num_of_wal_formula_v2.patch | application/octet-stream | 1.0 KB |
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