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Subject: Re: Question about "pcpu" rctl
From: Dustin Wenz <dustinwenz@ebureau.com>
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As far as I know, pcpu has never worked for limiting beyond a single =
core. I submitted a patch for kern/kern_racct.c that should fix it:
=20
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D189870

Please update the bug if it does or doesn't resolve the issue. Maybe =
that will prompt a committer to apply it to stable.

	- .Dustin

>=20
> Anyone can advise me please?
> Thanks!
>     From: John Dison via freebsd-stable <freebsd-stable at =
freebsd.org>
> To: "stable at freebsd.org" <stable at freebsd.org>=20
> Sent: Tuesday, September 15, 2015 1:00 PM
> Subject: Question about "pcpu" rctl
>=20
> Hello and have a nice day!
>=20
> I try to limit cpu usage for multi-threaded process on a multi-core =
machine.
> I use the following command:
> # rctl -a user:myusernm:pcpu:deny=3D200/user
> And I expect (please correct me if I am wrong) that all processes =
running with uid=3Dmyusernm will consume 200% of CPU in total.
> But after that I see that multi-threaded process continues to consume =
all available cores on my machine.
> rctl command reports:# rctluser:myusernm:pcpu:deny=3D200
> What am I doing wrong?
>=20