From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 14 Jan 2000 16:49:00 +0100 (CET) From: Andrea Arcangeli Subject: Re: 1+ GB support (fwd) In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel , kelly@nvidia.com Cc: Linux MM , linux-kernel@vger.rutgers.edu List-ID: > > I've read a bunch of linux news that says that the later kernels >such as 2.3.35 can support more than 1gb of memory. I've put together a >system with 4gb of RAM (dell 6300, 2x PIII 550 xeon CPUs) and can see that 2.2.14aa1 supports 4g of RAM on IA32 and 2Terabyte of RAM on alpha (wihout per-process limit on alpha) with production quality. Apply the below patch against 2.2.14 if you can't run an unstable tree. ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.2/2.2.14aa1.gz >processes. However, I've been unable to malloc and use more than 1gb per >process. Is this a limitation or am I doing something wrong? I've tried to If you use 2.2.14aa1 you can apply these two incremental patches (they should go on the top of 2.3.x as well) to allocate more ram per-process (something like 3.5G). The two incremental patches are _not_ a good idea if you need a large I/O cache (like for webservers). For scientific application that only needs lots of RAM they should be fine. ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/patches/v2.2/2.2.14/bigmem-large-mapping-1.gz ftp://ftp.*.kernel.org/pub/linux/kernel/people/andrea/patches/v2.2/2.2.14/patches/v2.2/2.2.14/bigmem-large-task-1.gz Andrea -- 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.nl.linux.org/Linux-MM/