From: mark <dvlhntr@gmail.com>
To: 'Ben Ciceron' <ben@triggit.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: pg9 replication over WAN ?
Date: Thu, 6 Oct 2011 21:22:12 -0600
Message-ID: <00bd01cc84a0$4f57a700$ee06f500$@com> (raw)
In-Reply-To: <CAOsHk6FwAXkYK1OsZbtvhPwiJgky9_k=ji48pPoVJOtj2ZSsDg@mail.gmail.com>
References: <CAOsHk6FwAXkYK1OsZbtvhPwiJgky9_k=ji48pPoVJOtj2ZSsDg@mail.gmail.com>
> -----Original Message-----
> From: pgsql-performance-owner@postgresql.org [mailto:pgsql-performance-
> owner@postgresql.org] On Behalf Of Ben Ciceron
> Sent: Wednesday, October 05, 2011 3:53 PM
> To: pgsql-performance@postgresql.org
> Subject: [PERFORM] pg9 replication over WAN ?
>
> Hello,
>
> Has any performance or evaluation done for pg9.x streaming replication
> over WAN ?
> How adequate is the protocol to push WALs over long distance ?
> Any best practice tuning wal_* for WAN ?
>
> Cheers,
> Ben-
Works for us between the middle of the US and the UK. This on some databases
that do a few gig of log files per day.
I keep a large number of wal_keep_segments because I have the disk capacity
for it and the initial rsync takes a while at ~2-4MB/s.
You may find you need to tune the tcp-keep alive settings, but I am not sure
if that was really a change in the setting or a fix to our load balancers
that fixed an issue I was seeing.
Overall I am extremely pleased with streaming replication + read only hot
standby.
-Mark
>
> --
> Sent via pgsql-performance mailing list (pgsql-
> performance@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: dvlhntr@gmail.com, ben@triggit.com
Subject: Re: pg9 replication over WAN ?
In-Reply-To: <00bd01cc84a0$4f57a700$ee06f500$@com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox