Message-ID: <50EC9436.7050700@optionshouse.com>
Date: Tue, 8 Jan 2013 15:48:38 -0600
From: Shaun Thomas <sthomas@optionshouse.com>
Reply-To: <sthomas@optionshouse.com>
Organization: Peak6
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To: AJ Weber <aweber@comcast.net>
CC: <pgsql-performance@postgresql.org>
Subject: Re: Two Necessary Kernel Tweaks for Linux Systems
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On 01/08/2013 02:05 PM, AJ Weber wrote:

> Is there an "easy" way to tell what scheduler my OS is using?

Unfortunately not. I looked again, and it seems that CFS was merged into 
2.6.23. Anything before that is probably safe, but the vendor may have 
backported it. If you don't see the settings I described, you probably 
don't have it.

So I guess Midge had 2.6.18, which predates the merge in 2.6.23.

I honestly don't understand the Linux kernel sometimes. A process 
scheduler swap is a *gigantic* functional change, and it's in a dot 
release. I vastly prefer PostgreSQL's approach...

-- 
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas@optionshouse.com

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