Date: Thu, 5 Nov 2015 15:51:45 -0600 From: Dustin Wenz <dustinwenz@ebureau.com> To: freebsd-stable@freebsd.org Subject: Re: Question about "pcpu" rctl Message-ID: <C5E8B5AF-9623-4A41-907C-6121E4642440@ebureau.com> In-Reply-To: <91178832-EBB8-498C-9651-E29C2844D4C5@ebureau.com> References: <91178832-EBB8-498C-9651-E29C2844D4C5@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: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=189870 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 > > 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> > Sent: Tuesday, September 15, 2015 1:00 PM > Subject: Question about "pcpu" rctl > > Hello and have a nice day! > > 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=200/user > And I expect (please correct me if I am wrong) that all processes running with uid=myusernm 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=200 > What am I doing wrong? >
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