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Date:      Fri, 13 Apr 2012 17:34:40 +0000
From:      Alexander Best <arundel@freebsd.org>
To:        Mahesh Babu <maheshbabu90@yahoo.co.in>
Cc:        "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject:   Re: Regarding core disable in FreeBSD 9
Message-ID:  <20120413173440.GA48030@freebsd.org>
In-Reply-To: <1334333913.65753.YahooMailNeo@web193204.mail.sg3.yahoo.com>
References:  <1334333913.65753.YahooMailNeo@web193204.mail.sg3.yahoo.com>

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On Sat Apr 14 12, Mahesh Babu wrote:
> How to disable a particular core in FreeBSD 9?
> How to enable it again?

i don't think it's possible to do that in freebsd. what you can do is to
disable SMP oder hyperthreading. alternatively you can assign a certain process
to a certain core.

i think there's a project to disable and enable specific cores on the fly.
freebsd is pretty far behind regarding this feature. beos was able to do this
anno 1998 or so afair.

cheers.
alex



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