Re: Acclerating INSERT/UPDATE using UPS

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: gene(at)sotech(dot)us, pgsql-hackers(at)postgresql(dot)org, Hideyuki Kawashima <kawasima(at)cs(dot)tsukuba(dot)ac(dot)jp>
Subject: Re: Acclerating INSERT/UPDATE using UPS
Date: 2007-02-12 22:29:48
Message-ID: 200702122229.l1CMTmL07000@momjian.us
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Tom Lane wrote:
> Gene <genekhart(at)gmail(dot)com> writes:
> > ... just my two cents. on a side note, would putting the wal on a
> > tmpfs partition give you something similar?
>
> Indeed, I'm wondering why one needs to hack the Postgres core to throw
> away data integrity guarantees; there are plenty of ways to do that
> already :-(. Hideyuki-san has not explained exactly what integrity
> assumptions he wants to make or not make. I'm surely willing to listen
> to supporting a different set of assumptions than we currently use, but
> I'd like to see a clear explanation of what assumptions are being made
> and why they represent a useful case.

I am unsure why Sigres is significantly faster than just creating a file
system on the permanent memory and putting xlog on there.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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