On Thu, 2004-12-23 at 15:15, Jerome BENOIT wrote: > Dave Ewart wrote: > > On Thursday, 23.12.2004 at 13:39 +0000, Jerome BENOIT wrote: > > > > > >>Hello List, > >> > >>I observed a similar behaviour on my Sarge laptop (Inspiron 8200): I > >>have 1GB ram but /proc/mening shows (only) 905136 kB and the Gnome > >>system monitor 884 MB. > >> > >>I have to say that my kernel is not 4GB enabled: so far I thought that > >>1GB was smaller that 4GB. > > In fact, according to the help message provided by the kernel, > 1GB is on the edge: so it is not so clear to me wether the kernel > must be 4GB enabled. > > > > > > > There's something magic about that 905MB line - a 1GB RAM machine of > > ours showed that amount as total RAM when on a non-4GB and non-64GB > > kernel. Don't know why exactly it's 905MB, but that ties up with what I > > saw. It's not sharing with AGP memory, because my system didn't have > > that. > > > > Once upgraded to a 4GB kernel, the full 1GB was visible. > > > > Dave. > > I am rebuilding my kernel with this option. > > We will see, > Jerome
There are three memory zones on x86 for linux ZONE_DMA < 16 MB ZONE_NORMAL 16-896 MB ZONE_HIGHMEM > 896 MB related to various hardware limitations. There's some interesting discussions of this in 'Linux Kernel Development' by R. Love. -peter -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
