From: | "Dr(dot) Michael Meskes" <meskes(at)online-club(dot)de> |
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To: | hackers(at)postgreSQL(dot)org |
Subject: | Re: [HACKERS] proposals for LLL, part 1 |
Date: | 1998-07-27 14:54:07 |
Message-ID: | 19980727165407.A2473@feivel.online-club.de |
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Lists: | pgsql-hackers |
On Fri, Jul 17, 1998 at 01:00:10PM +0800, Vadim Mikheev wrote:
> In original postgres there was dedicated vacuum process...
> Vacuuming without human administration is possible but
> in any case commit in non-overwriting system requires
> ~2 data block writes (first - to write changes, second - to
> write updated xmin/xmax statuses). In WAL systems only
> 1 data block write required...
Then the arguments are clearly in favor of WAL.
> Oracle is WAL and multi-version system!
While Oracle has some faults (or more) I agree with that choice.
> We could implement multi-version control now and switch
> to WAL latter...
Once again I fully agree.
> I personally very like multi-versions...
Me too.
Michael
--
Dr. Michael Meskes meskes(at)online-club(dot)de, meskes(at)debian(dot)org
Go SF49ers! Go Rhein Fire! Use Debian GNU/Linux!
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