Isn't putting the WAL in memory dangerous in case of a power failure?
I would think that RI would be compromised.
-----Original Message-----
From: pgsql-general-owner@postgresql.org
[mailto:pgsql-general-owner@postgresql.org] On Behalf Of William Yu
Sent: Thursday, January 27, 2005 12:41 PM
To: pgsql-general@postgresql.org
Subject: Re: [GENERAL] Splitting queries across servers
With a Quad Opteron (4 memory slots per CPU), you could put 64GB of RAM
onto a single machine using 4GB DIMMs in every slot.
The other option is to explore static memory storage. It's probably too
expensive to put your entire DB onto such a device but moving just the
WAL there would give you a pretty decent jump in write performance. (I
ran some tests way back simulating this by using a RAMDISK to store the
WAL files and got ~60% increase in an update-heavy mix.)