Horton

Re: Separating bgwriter and checkpointer

Fujii Masao <masao.fujii@gmail.com>

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From: Fujii Masao <masao.fujii@gmail.com>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: "Dickson S. Guedes" <listas@guedesoft.net>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2011-10-19T10:36:08Z
Lists: pgsql-hackers 
On Tue, Oct 18, 2011 at 10:18 PM, Simon Riggs <simon@2ndquadrant.com> wrote:
> Any reason or objection to committing this patch?

The checkpointer doesn't call pgstat_send_bgwriter(), but it should.
Otherwise, some entries in pg_stat_bgwriter will never be updated.

If we adopt the patch, checkpoint is performed by checkpointer. So
it looks odd that information related to checkpoint exist in
pg_stat_bgwriter. We should move them to new catalog even if
it breaks the compatibility?

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center