From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
---|---|
To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: New FSM patch |
Date: | 2008-09-01 16:34:01 |
Message-ID: | 1220286841.4371.180.camel@ebony.2ndQuadrant |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On Fri, 2008-08-29 at 10:47 +0300, Heikki Linnakangas wrote:
> - Per comments and discussion with Simon, I've changed the "bubble up"
> behavior so that when a bottom-level page is updated, if the amount of
> free space was decreased, the change is not immediately bubbled up to
> upper page. Instead, searchers that traverse down the tree will update
> the upper pages when they see that they're out of sync. This should
> alleviate the worry that we need to keep a bottom-level page exclusively
> locked across I/O.
Thanks for taking time with the new FSM.
--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support
From | Date | Subject | |
---|---|---|---|
Next Message | Simon Riggs | 2008-09-01 16:35:45 | Re: statement_cost_limit for regression testing. |
Previous Message | Simon Riggs | 2008-09-01 16:27:06 | Re: New FSM allocation policy |