Skip site navigation (1) Skip section navigation (2)

Re: Bgwriter behavior

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>,Gavin Sherry <swm(at)linuxworld(dot)com(dot)au>,PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Bgwriter behavior
Date: 2004-12-27 22:30:31
Message-ID: 200412272230.iBRMUVr11867@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
Added to TODO:

* Improve the background writer

  Allow the background writer to more efficiently write dirty buffers
  from the end of the LRU cache and use a clock sweep algorithm to
  write other dirty buffers to reduced checkpoint I/O


---------------------------------------------------------------------------

Simon Riggs wrote:
> On Wed, 2004-12-22 at 04:43, Tom Lane wrote:
> > Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > > So what are we doing for 8.0?
> > 
> > Well, it looks like RC2 has already crashed and burned --- I can't
> > imagine that Marc will let us release without an RC3 given what was
> > committed today, never mind the btree bug that Mark Wong seems to have
> > found.  So maybe we should just bite the bullet and do something real
> > about this.
> > 
> > I'm willing to code up a proposed patch for the two-track idea I
> > suggested, and if anyone else has a favorite maybe they could write
> > something too.  But do we have the resources to test such patches and
> > make a decision in the next few days?
> > 
> > At the moment my inclination is to sit on what we have.  I've not seen
> > any indication that 8.0 is really worse than earlier releases; the most
> > you could argue against it is that it's not as much better as we hoped.
> > That's not grounds to muck around at the RC3 stage.
> 
> Agreed, if somewhat reluctantly.
> 
> We may have the time to test, but it is clear that we do not have the
> time to validate those tests, then discuss and agree on the results.
> 
> Time to go with what we have.
> 
> [Mark's possible bug seems a higher priority for me.]
> 
> -- 
> Best Regards, Simon Riggs
> 
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 3: if posting/reading through Usenet, please send an appropriate
>       subscribe-nomail command to majordomo(at)postgresql(dot)org so that your
>       message can get through to the mailing list cleanly
> 

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

In response to

pgsql-hackers by date

Next:From: Bruce MomjianDate: 2004-12-27 22:56:33
Subject: Re: RC2 and open issues
Previous:From: Bruce MomjianDate: 2004-12-27 22:22:22
Subject: Ready for RC3?

pgsql-patches by date

Next:From: Bruce MomjianDate: 2004-12-27 22:56:33
Subject: Re: RC2 and open issues
Previous:From: Bruce MomjianDate: 2004-12-27 22:21:31
Subject: Re: Bgwriter behavior

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group