[lkml]   [2002]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: x86 question: Can a process have > 3GB memory?
On Tue, May 07, 2002 at 04:08:55PM -0700, Robert Love wrote:
> On Tue, 2002-05-07 at 16:03, Clifford White wrote:
> > We are working with a database that requires a large amount of memory
> > allocated by a single process.
> > This is on an Intel 32-bit platform.
> > We'd like to go > 3GB of memory per process.
> > Is this possible on a 32-bit machine? I have been reading the various
> > 'highmem' discussions, but that's kernel page tables...
> > Or is this a glibc issue, and not proper for a kernel-list question?
> > Any pointers would be appreciated. The Intel ESMA (Extended Server Memory
> > Arch) page states that it's possible,
> You can go to 3.5GB, anything more and stuff starts getting real tight
> and not very nice. You can only do 3.5/0.5 on non-PAE, though - PAE
> requires segments to be aligned on 1GB-boundaries.
> The attached patch (for which credit goes elsewhere - Ingo or Randy, I
> think?) implements the full range of 1 to 3.5GB user space partitioning,

actually I'm the one who wrote the 3.5G config option both in 2.2 and
recently I forward ported it to 2.4 due the number of requests I was

> selectable at compile-time.
> Robert Love

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:25    [W:0.137 / U:2.944 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site