Really? Wow. UL support 4GB out of the box. UL includes both CONFIG_HIGHMEM4G as well as CONFIG_1GB. I know there is also an option for 64GB.
(from /usr/src/linux/Documentation/Configure.help) ---------------------------------------------------- 4GB CONFIG_HIGHMEM4G Select this if you have a 32-bit processor and between 1 and 4 gigabytes of physical RAM. 64GB CONFIG_HIGHMEM64G Select this if you have a 32-bit processor and more than 4 gigabytes of physical RAM. User address space size CONFIG_1GB If you have 4 Gigabytes of physical memory or less, you can change where the kernel maps high memory. Typically there will 128 megabytes less "user memory" mapped than the number in the configuration option. Saying that another way, "high memory" will usually start 128 megabytes lower than the configuration option. Selecting "05GB" results in a "3.5GB/0.5GB" kernel/user split: On a system with 1 gigabyte of physical memory, you may get 384 megabytes of "user memory" and 640 megabytes of "high memory" with this selection. Selecting "1GB" results in a "3GB/1GB" kernel/user split: On a system with 1 gigabyte of memory, you may get 896 MB of "user memory" and 128 megabytes of "high memory" with this selection. This is the usual setting. Selecting "2GB" results in a "2GB/2GB" kernel/user split: On a system with less than 1.75 gigabytes of physical memory, this option will make it so no memory is mapped as "high". Selecting "3GB" results in a "1GB/3GB" kernel/user split: If unsure, say "1GB". On Wed, 8 Oct 2003 16:59:57 -0400 (EDT) Net Llama! <[EMAIL PROTECTED]> wrote: > The 'stock' Redhat kernel suports no more than 1GB. SuSE kernels might > support more. Redhat includes a 'bigmem' kernel which supports 16GB. > > On Wed, 8 Oct 2003, Matthew Carpenter wrote: > > > Yes, but most stock kernels support up to 4GB, which is still more than 2GB > > this guy's using... > > > > ----- Original Message ----- > > From: "Net Llama!" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, October 08, 2003 1:15 PM > > Subject: Re: Maximum Memory in Linux > > > > > > > On Wed, 8 Oct 2003, Simper, Brian D wrote: > > > > > > > > Is there a theoretical or functional maximum memory you can put in a > > > > Linux machine? I have a server with 2GB installed but the free command > > > > stubbornly says: > > > > > > > > # free > > > > total used free shared buffers > > > > cached > > > > Mem: 902768 672416 230352 0 45820 > > > > 193564 > > > > -/+ buffers/cache: 433032 469736 > > > > Swap: 522216 25124 497092 > > > > > > > > This is Red Hat Linux 9 machine with a stock kernel. Am I missing some > > > > crucial point? Has anyone else dealt with a lower than expected > > > > reported memory? > > > > > > Your kernel doesn't have bigmem support. x86 architecture on linux > > > supports up to 64GB. > > > > > > -- > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > Lonni J Friedman [EMAIL PROTECTED] > > > Linux Step-by-step & TyGeMo http://netllama.ipfox.com > > > _______________________________________________ > > > Linux-users mailing list > > > [EMAIL PROTECTED] > > > Unsubscribe/Suspend/Etc -> > > http://smtp.linux-sxs.org/mailman/listinfo/linux-users > > > > > > > > > > > > > _______________________________________________ > > Linux-users mailing list > > [EMAIL PROTECTED] > > Unsubscribe/Suspend/Etc -> http://smtp.linux-sxs.org/mailman/listinfo/linux-users > > > > -- > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Lonni J Friedman [EMAIL PROTECTED] > Linux Step-by-step & TyGeMo http://netllama.ipfox.com > _______________________________________________ > Linux-users mailing list > [EMAIL PROTECTED] > Unsubscribe/Suspend/Etc -> http://smtp.linux-sxs.org/mailman/listinfo/linux-users > > -- Matthew Carpenter [EMAIL PROTECTED] http://www.eisgr.com/ Enterprise Information Systems * Network Server Appliances * Network Consulting, Integration & Support * Web Integration and E-Business _______________________________________________ Linux-users mailing list [EMAIL PROTECTED] Unsubscribe/Suspend/Etc -> http://smtp.linux-sxs.org/mailman/listinfo/linux-users
