In article <[EMAIL PROTECTED]>, Erik Mouw <[EMAIL PROTECTED]> wrote: >On Wed, Jul 20, 2005 at 02:16:36PM +0200, Bastiaan Naber wrote: >> I have a 15 GB file which I want to place in memory via tmpfs. I want to do >> this because I need to have this data accessible with a very low seek time. > >That should be no problem on a 64 bit architecture. > >AFAIK you can't use a 15 GB tmpfs on i386 because large memory support >is basically a hack to support multiple 4GB memory spaces (some VM guru >correct me if I'm wrong).
I'm no VM guru but I have a 32 bit machine here with 8 GB of memory and 8 GB of swap: # mount -t tmpfs -o size=$((12*1024*1024*1024)) tmpfs /mnt # df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 19228276 1200132 17051396 7% / tmpfs 12582912 0 12582912 0% /mnt There you go, a 12 GB tmpfs. I haven't tried to create a 12 GB file on it, though, since this is a production machine and it needs the memory .. So yes that appears to work just fine. Mike. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
