PostgreSQL I/O bottleneck

From: "Burgess, Freddie" <FBurgess(at)Radiantblue(dot)com>
To: "pgsql-bugs(at)postgresql(dot)org" <pgsql-bugs(at)postgresql(dot)org>
Subject: PostgreSQL I/O bottleneck
Date: 2014-08-23 01:32:33
Message-ID: 3BBE635F64E28D4C899377A61DAA9FE03F08FB66@NBSVR-MAIL01.radiantblue.local
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Logged by: Freddie Burgess
Email address: fburgess(at)radiantblue(dot)com
PostgreSQL version: 9.3.4
Operating system: Red_hat Linux 6.4
Description:

Server Monitoring is reporting the following problem on our Primary database server.

Disk % of time device was busy Servicing a transfer request > 95% and outside all baselines for 15 mins

No backup's were executed when this error was reported

Does anyone know the possible causes for this i/o bottleneck to be reported?

thanks

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