Postgres Pro
Downloads
Home   >   mailing lists

Re: Hi- How frequently Postgres Poll for trigger file - Mailing list pgsql-hackers

From Heikki Linnakangas
Subject Re: Hi- How frequently Postgres Poll for trigger file
Date
Msg-id 4CF69AE8.7080608@enterprisedb.com
Whole thread Raw
In response to Re: Hi- How frequently Postgres Poll for trigger file  (aaliya zarrin <aaliya.zarrin@gmail.com>)
List pgsql-hackers
Tree view 
On 01.12.2010 19:23, aaliya zarrin wrote:
> Thanks for quick response..
> Can I change this 5 second time?
> I have seen the postgres code as well.

You can, if you don't mind changing the sources.

> What is the functionality of WaitLatch() function. I could not understand
> completely.

The recoveryWakupLatch latch allows the startup process to wake up 
immediately when new WAL arrives via streaming replication, without 
waiting for the whole five seconds to elapse.

--   Heikki Linnakangas  EnterpriseDB   http://www.enterprisedb.com

pgsql-hackers by date:

Previous
From: Josh Berkus
Date:
Subject: Re: We really ought to do something about O_DIRECT and data=journalled on ext4
Next
From: Andrew Dunstan
Date:
Subject: Re: We really ought to do something about O_DIRECT and data=journalled on ext4