Re: Using IOZone to simulate DB access patterns

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Using IOZone to simulate DB access patterns
Date: 2009-04-04 00:09:53
Message-ID: 49D6A551.5080001@agliodbs.com
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On 4/3/09 4:12 PM, Josh Berkus wrote:
> All,
>
> I've been using Bonnie++ for ages to do filesystem testing of new DB
> servers. But Josh Drake recently turned me on to IOZone.

Related to this: is IOZone really multi-threaded? I'm doing a test run
right now, and only one CPU is actually active. While there are 6
IOZone processes, most of them are idle.

--Josh

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