Re: Acclerating INSERT/UPDATE using UPS - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Acclerating INSERT/UPDATE using UPS
Date
Msg-id 200702122229.l1CMTmL07000@momjian.us
Whole thread Raw
In response to Re: Acclerating INSERT/UPDATE using UPS  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Acclerating INSERT/UPDATE using UPS  (Gene <genekhart@gmail.com>)
Re: Acclerating INSERT/UPDATE using UPS  (Hideyuki Kawashima <kawasima@cs.tsukuba.ac.jp>)
List pgsql-hackers
Tom Lane wrote:
> Gene <genekhart@gmail.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@momjian.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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