Horton

Re: CLOG contention, part 2

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2012-01-20T13:37:48Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Call check_keywords.pl in maintainer-check

  2. Make the number of CLOG buffers adaptive, based on shared_buffers.

On Sun, Jan 8, 2012 at 9:25 AM, Simon Riggs <simon@2ndquadrant.com> wrote:
> I've taken that idea and used it to build a second Clog cache, known
> as ClogHistory which allows access to the read-only tail of pages in
> the clog. Once a page has been written to for the last time, it will
> be accessed via the ClogHistory Slru in preference to the normal Clog
> Slru. This separates historical accesses by readers from current write
> access by committers. Historical access doesn't force dirty writes,
> nor are commits made to wait when historical access occurs.

This seems to need a rebase.

-- 
Robert Haas
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