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To: "Babak Farrokhi" <farrokhi@FreeBSD.org>
cc: "Mark Saad" <nonesuch@longcount.org>,
 FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: CPU Isolation
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From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
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--------
In message <AC6FACC4-2403-41B7-B7E6-738A692929A2@FreeBSD.org>, "Babak Farr=
okhi" writes:

>AFAIK there is no way to do it pre-boot. To do the isolation post-boot yo=
ur
>best bet is cpuset(1) (with which I could not totally isolate cpu cores
>as dedicated application cores).

The trick is to move /sbin/init to /sbin/init.real and create a
/sbin/init shell script which cpuset's PID=3D1 then exec's /sbin/init.real

Be aware that the surroundings of that shell script are very sparse.

-- =

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    =

Never attribute to malice what can adequately be explained by incompetence=
.