From owner-freebsd-hackers@FreeBSD.ORG Wed Jul 30 00:36:29 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B75FB62F; Wed, 30 Jul 2014 00:36:29 +0000 (UTC) Received: from mail-qg0-x231.google.com (mail-qg0-x231.google.com [IPv6:2607:f8b0:400d:c04::231]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 652EE2B88; Wed, 30 Jul 2014 00:36:29 +0000 (UTC) Received: by mail-qg0-f49.google.com with SMTP id j107so586106qga.22 for ; Tue, 29 Jul 2014 17:36:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=k9jmrvpQNU55ZUJwMCBCZB1FnRCiimgAR1VrMllSclo=; b=nPcf2yDf3czA+jpsErO88nOCOb+XtFSHgZfhpHTNaOKp4jamPllf/S/zLBdgDHeFIf f16cR2OT959GfKGfPb5qSY3s2HMH+BLxxVLF7e1x8OffkE6HCcG/lTpuHCztlJ2Ci0Fa LNYJ+KzaWltbBbe9qWcGklLtTAgF615t7gBHO/4QqzKiacLt1y0XhpscAtvEfjx3YI52 svcgEUmWuH20iB8SS1E+uip7qXKvI+RZi2492jW9rxufxkgG0Gxg6ofSM1eylgF2lbX4 AvcdlDInJYt56ss2UQ4G3qEW4DnkXli0JyFl2DRvgTQU0EjyVk27bOXHMLNWCj4dNWob kFmQ== MIME-Version: 1.0 X-Received: by 10.224.161.83 with SMTP id q19mr1042855qax.26.1406680588414; Tue, 29 Jul 2014 17:36:28 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.224.1.6 with HTTP; Tue, 29 Jul 2014 17:36:28 -0700 (PDT) In-Reply-To: References: <00E55D89-BDD1-41AD-BBF6-6752B90E8324@ccsys.com> Date: Tue, 29 Jul 2014 17:36:28 -0700 X-Google-Sender-Auth: oXWu8v2arg7xEpHd0poYyx3RIGc Message-ID: Subject: Re: Working on NUMA support From: Adrian Chadd To: Andrew Bates Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-hackers@freebsd.org" , Jeff Roberson X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jul 2014 00:36:29 -0000 On 29 July 2014 14:51, Andrew Bates 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