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From: Boszormenyi Zoltan <zb@cybertec.at>
To: sthomas@optionshouse.com
Cc: AJ Weber <aweber@comcast.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Two Necessary Kernel Tweaks for Linux Systems
Date: Mon, 14 Jan 2013 15:28:48 +0100
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2013-01-08 22:48 keltezéssel, Shaun Thomas írta:
> 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...

The kernel version numbering is different.
A point release in 2.6.x is 2.6.x.y.
This has changed in 3.x, a point release is 3.x.y.

Best regards,
Zoltán Böszörményi

-- 
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Zoltán Böszörményi
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt, Austria
Web: http://www.postgresql-support.de
      http://www.postgresql.at/



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