Re: Two Necessary Kernel Tweaks for Linux Systems - Mailing list pgsql-performance

From Shaun Thomas
Subject Re: Two Necessary Kernel Tweaks for Linux Systems
Date
Msg-id 50EC9436.7050700@optionshouse.com
Whole thread Raw
In response to Re: Two Necessary Kernel Tweaks for Linux Systems  (AJ Weber <aweber@comcast.net>)
Responses Re: Two Necessary Kernel Tweaks for Linux Systems
Re: Two Necessary Kernel Tweaks for Linux Systems
List pgsql-performance
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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