Date: Tue, 22 Mar 2016 20:15:16 -0700 From: Adrian Chadd <adrian.chadd@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: "freebsd-arch@freebsd.org" <arch@freebsd.org> Subject: Re: More fine-grained NUMA knobs Message-ID: <CAJ-Vmo=xe-MbFgaDyD-wAX6g4gOeLqy9PZ5AwPX=dp3HX4=Luw@mail.gmail.com> In-Reply-To: <27035442.YCnG4SQ1mX@ralph.baldwin.cx> References: <27035442.YCnG4SQ1mX@ralph.baldwin.cx>
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+1 by me! -a On 22 March 2016 at 17:13, John Baldwin <jhb@freebsd.org> wrote: > Some of the I/O device affinity stuff such as bus_get_domain() (and the > bus_get_cpus() I have in review in D5519) are useful on their own right even > if the VM system is not doing NUMA-aware allocations. I think it would be > useful to be able to enable these two "prongs" of NUMA awareness > independently. To that end, I have a little strawman patch that adds two > new kernel options: VM_NUMA_ALLOC and DEVICE_NUMA. I actually think it is > probably worth enabling DEVICE_NUMA by default on x86 (and bumping the > default MAXMEMDOM to, say, 8 (quad-socket haswell)). > > You can see the simple patch at: > > https://github.com/bsdjhb/freebsd/compare/master...bsdjhb:numa_opts > > Thoughts? > > -- > John Baldwin > _______________________________________________ > freebsd-arch@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arch > To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org"
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