Message-ID: <04bb01c31387$637105d0$6500a8c0@fhp.internal>
From: "Christopher Kings-Lynne" <chriskl@familyhealth.com.au>
To: "Tom Lane" <tgl@sss.pgh.pa.us>
Cc: "Hackers" <pgsql-hackers@postgresql.org>
References: <040801c31371$b7766e10$6500a8c0@fhp.internal>
	<22222.1052194401@sss.pgh.pa.us>
Subject: Re: tablespace patch 
Date: Tue, 6 May 2003 12:24:30 +0800
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> Well, they shouldn't be using Relations, for sure.  Something based
> on knowing only RelFileNode would be appropriate.  Vadim wrote a few
> messages about this back when he was still active --- check the
> archives.
>
> In my mind a touchstone for a proper redesign of this layer is that
> the checkpoint process should not be handicapped by not being a full
> backend.  Right now, all checkpoint buffer writes happen via
> smgrblindwrt, which is a nontrivial performance loss.  Ideally the
> notion of "blind write" should go away, because you shouldn't need
> anything more than the RelFileNode and block number, which are both
> available from the shared buffer descriptor.

Hmmm...might be a bit out of my league...  I'll look into it all, but
something tells me it'll take me quite a while :)

Chris