Load distributed checkpoint patch - Mailing list pgsql-patches

From ITAGAKI Takahiro
Subject Load distributed checkpoint patch
Date
Msg-id 20061219180112.648F.ITAGAKI.TAKAHIRO@oss.ntt.co.jp
Whole thread Raw
Responses Re: Load distributed checkpoint patch  (Bruce Momjian <bruce@momjian.us>)
Re: Load distributed checkpoint patch  (ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>)
List pgsql-patches
This is a patch for load distributed checkpoint discussed in
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00337.php

Only write() calls are smoothed, fsync() are not.
Existing checkpoint method is called "immediate checkpoint" in the patch,
and the new method called "asynchronous checkpoint".

I'm working on more robust control of checkpoint progress. WAL are written
a lot just after checkpoints because of full-page-writes and decreases
gradually. Linear control seems to be not enough in some cases.

Comments, suggestions and testing are appreciated.

Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center


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