Horton

Re: PITR, checkpoint, and local relations

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: "Mikheev, Vadim" <vmikheev@SECTORBASE.COM>
Cc: "J. R. Nield" <jrnield@usol.com>, Richard Tucker <richt@multera.com>, Bruce Momjian <pgman@candle.pha.pa.us>, PostgreSQL Hacker <pgsql-hackers@postgresql.org>
Date: 2002-08-02T21:29:09Z
Lists: pgsql-hackers 
"Mikheev, Vadim" <vmikheev@SECTORBASE.COM> writes:
> So, we only have to use shared buffer pool for local (but probably
> not for temporary) relations to close this issue, yes? I personally
> don't see any performance issues if we do this.

Hmm.  Temporary relations are a whole different story.

It would be nice if updates on temp relations never got WAL-logged at
all, but I'm not sure how feasible that is.  Right now we don't really
distinguish temp relations from ordinary ones --- in particular, they
have pg_class entries, which surely will get WAL-logged even if we
persuade the buffer manager not to do it for the data pages.  Is that
a problem?  Not sure.

			regards, tom lane