lkml.org 
[lkml]   [2005]   [Jul]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: a 15 GB file on tmpfs
    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.

    > I want to know if this is possible before spending 10,000 euros on a machine
    > that has 16 GB of memory.

    If you want to spend that amount of money on memory anyway, the extra
    cost for an AMD64 machine isn't that large.

    > The machine we plan to buy is a HP Proliant Xeon machine and I want to run a
    > 32 bit linux kernel on it (the xeon we want doesn't have the 64-bit stuff
    > yet)

    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). Just get an Athlon64 machine and run a 64 bit
    kernel on it. If compatibility is a problem, you can still run a 32 bit
    i386 userland on an x86_64 kernel.


    Erik

    --
    +-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 --
    | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-07-20 15:24    [W:3.808 / U:0.732 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site