| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
| Cc: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Re: [COMMITTERS] pgsql: Check compulsory parameters in recovery.conf in standby_mode, per |
| Date: | 2010-04-06 07:14:22 |
| Message-ID: | 4BBADF4E.5030900@enterprisedb.com |
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| Lists: | pgsql-committers pgsql-hackers |
Simon Riggs wrote:
> On Mon, 2010-04-05 at 19:29 +0100, Simon Riggs wrote:
>
>> Looking through the code some more I note that their are two timing
>> related parameters that are hardcoded into XLogPageRead(). At the very
>> least such things should be #defines, though one of them was previously
>> configurable using pg_standby, so I would like to see them both
>> accessible to user tuning.
>
> ...the code says "we want to react quickly when the next WAL record
> arrives" and then sleeps for 100ms.
The comment continues ", so sleep only a bit". That's in comparison to
the 5 s wait when polling the archive.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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