From: Simon Riggs <simon@2ndquadrant.com>
To: Bernd Helmle <mailings@oopsware.de>
Cc: mfatticcioni@mbigroup.it
Cc: pgsql-performance@postgresql.org
Subject: Re: DRBD and Postgres: how to improve the perfomance?
Date: Sat, 08 Sep 2007 07:28:24 +0100
Message-ID: <1189232904.4281.19.camel@ebony.site> (raw)
In-Reply-To: <2C070D1C3970467FF64F6B6A@imhotep.credativ.de>
References: <2C070D1C3970467FF64F6B6A@imhotep.credativ.de>
On Fri, 2007-09-07 at 23:54 +0200, Bernd Helmle wrote:
> --On Freitag, September 07, 2007 20:00:16 +0100 Simon Riggs
> <simon@2ndquadrant.com> wrote:
>
> > On Fri, 2007-09-07 at 11:37 +0200, Maila Fatticcioni wrote:
> >
> >> protocol C;
> >
> > Try protocol B instead.
>
> But that would have an impact on transaction safety, wouldn't it? It will
> return immediately after reaching the remote buffer cache and you can't be
> sure your data hits the remote disk.
You're right, but the distinction is a small one. What are the chances
of losing two independent servers within a few milliseconds of each
other?
If performance is an issue it is a particularly important distinction.
--
Simon Riggs
2ndQuadrant http://www.2ndQuadrant.com
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To: pgsql-performance@postgresql.org
Cc: simon@2ndquadrant.com, mailings@oopsware.de, mfatticcioni@mbigroup.it
Subject: Re: DRBD and Postgres: how to improve the perfomance?
In-Reply-To: <1189232904.4281.19.camel@ebony.site>
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