Re: Separating bgwriter and checkpointer - Mailing list pgsql-hackers

From Fujii Masao
Subject Re: Separating bgwriter and checkpointer
Date
Msg-id CAHGQGwEm+S+dOUwix0RjyyOh1rmUjXTPCscv-q5DgzEEj2sQ8w@mail.gmail.com
Whole thread Raw
In response to Re: Separating bgwriter and checkpointer  (Simon Riggs <simon@2ndQuadrant.com>)
Responses Re: Separating bgwriter and checkpointer  ("Dickson S. Guedes" <listas@guedesoft.net>)
List 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


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