Date: Tue, 29 Jul 2014 17:36:28 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Andrew Bates <andrewbates09@gmail.com> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Jeff Roberson <jeff@freebsd.org> Subject: Re: Working on NUMA support Message-ID: <CAJ-VmomMgvp4bBojiUFVDzSzLpbEdaG_1PFg79PMZXSxGN_CSA@mail.gmail.com> In-Reply-To: <CAPi5Lmk1zGSOg%2Bp2Hdhw2Uk%2BMZfOX-=bFFTsdH%2B5ZZwd7_oqeg@mail.gmail.com> References: <CAPi5LmkRO4QLbR2JQV8FuT=jw2jjcCRbP8jT0kj1g8Ks%2B7jv8A@mail.gmail.com> <CAJ-VmonJPT-NUSi=Wnu7a0oNwe8V=LQMZ-fZGriC7H44edRVLg@mail.gmail.com> <CAPi5Lm=8Z3fh_vxKY26qC3oEv1Ap%2BRvFGRAOhRosF5UEnDTVpw@mail.gmail.com> <00E55D89-BDD1-41AD-BBF6-6752B90E8324@ccsys.com> <CAJ-Vmom-wWZLCuuAEKDO1vuaGaSQM-=4e3xoh3OeVibc6m9Z8A@mail.gmail.com> <CAPi5Lmk1zGSOg%2Bp2Hdhw2Uk%2BMZfOX-=bFFTsdH%2B5ZZwd7_oqeg@mail.gmail.com>
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On 29 July 2014 14:51, Andrew Bates <andrewbates09@gmail.com> wrote: > Hey Adrian, > > Yes, there has been progress on this - although admittedly not as much as > we'd like at this point. I believe to what you're talking about, we have > the layout for CPU affinity/locality. I need to go through and cleanup a > good half-dozen branches of code. > > Myself a mere mortal standing on the shoulders of giants in a room of > titans, I have to merge in my changes with Jeff's pertinent branch to get > this closer to useable. Cool. What / where is jeff's branch? Is it public? > From my experience and research, in terms of access/response time: > 1. localized DMA < all remote > 2. (localized DMA + spillover remote) >= all remote > > As ugly as it may be, I think I said that right.. Hm, what do you mean by spillover remote? > There have been a few changes since that original email, but yes what we're > working to address is the userland <---> kernelspace. Cool. I'd like to get the kernel side worked out. :-) -a
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