Date: Wed, 11 Sep 2019 10:31:25 -0400 From: Mark Johnston <markj@freebsd.org> To: Mark Millard <marklmi@yahoo.com> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: "cpuset -n prefer:?" --what values for "?" are supposed to be allowed? (only 1 is, despite two numa domains) Message-ID: <20190911143125.GA17992@raichu> In-Reply-To: <C230AB3E-2FCF-4837-A4FD-A29F037647FC@yahoo.com> References: <C230AB3E-2FCF-4837-A4FD-A29F037647FC@yahoo.com>
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On Tue, Sep 10, 2019 at 10:58:05PM -0700, Mark Millard wrote: > In a context with: > > # cpuset -g > pid -1 mask: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 > pid -1 domain policy: first-touch mask: 0, 1 > > I get: > > # cpuset -l0 -n prefer:0 COMMAND > cpuset: setdomain: Invalid argument > > # cpuset -l0 -n prefer:2 COMMAND > cpuset: setdomain: Invalid argument > > But one prefer:? value does allow the COMMAND > to run: > > # cpuset -l0 -n prefer:1 COMMAND > > This seem odd to me. Am I missing something? > > For reference: I'm using a ThreadRipper 1950X > with a head -r351227 based context for this > activity. The above happens to have been run > in a Windows 10 Pro HyperV session, instead > of in a native-boot of the same media. (A > native-boot would have had 32 CPUs.) Can you please show the output of "sysctl vm.phys_segs" from this setup?
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