From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 20 Feb 2008 19:51:04 +0100 From: Pavel Machek Subject: Re: [PATCH] Document huge memory/cache overhead of memory controller in Kconfig Message-ID: <20080220185104.GA30416@elf.ucw.cz> References: <20080220122338.GA4352@basil.nowhere.org> <47BC2275.4060900@linux.vnet.ibm.com> <18364.16552.455371.242369@stoffel.org> <47BC4554.10304@linux.vnet.ibm.com> <20080220181911.GA4760@ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org Return-Path: To: Jan Engelhardt Cc: Balbir Singh , John Stoffel , Andi Kleen , akpm@osdl.org, torvalds@osdl.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Wed 2008-02-20 19:28:03, Jan Engelhardt wrote: > > On Feb 20 2008 18:19, Pavel Machek wrote: > >> > >> For ordinary desktop people, memory controller is what developers > >> know as MMU or sometimes even some other mysterious piece of silicon > >> inside the heavy box. > > > >Actually I'd guess 'memory controller' == 'DRAM controller' == part of > >northbridge that talks to DRAM. > > Yeah that must have been it when Windows says it found a new controller > after changing the mainboard underneath. Just for fun... this option really has to be renamed: Memory controller ~~~~~~~~~~~~~~~~~ >>From Wikipedia, the free encyclopedia The memory controller is a chip on a computer's motherboard or CPU die which manages the flow of data going to and from the memory. Most computers based on an Intel processor have a memory controller implemented on their motherboard's north bridge, though some modern microprocessors, such as AMD's Athlon 64 and Opteron processors, IBM's POWER5, and Sun Microsystems UltraSPARC T1 have a memory controller on the CPU die to reduce the memory latency. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org