Messages in this thread |  | | Date | Thu, 18 Oct 2001 11:09:14 +0200 | From | Andrea Arcangeli <> | Subject | Re: "3.5GB user address space" option. |
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On Wed, Oct 17, 2001 at 09:38:35PM -0700, H. Peter Anvin wrote: > Followup to: <1981072193242.20011018021819@spylog.com> > By author: "Oleg A. Yurlov" <kris@spylog.com> > In newsgroup: linux.dev.kernel > > > > > > Hi, folks, > > > > How I can use 3.5GB in my apps ? I try malloc() and get error on 2G > > bounce... :-( > > > > Hardware - SMP server, 2Gb RAM, 8Gb swap, kernel 2.4.12aa1. > > > > Get a 64-bit CPU. You're running into a fundamental limit of 32-bit > architectures.
Actually 3.5G per-process is theoretically possible using a careful userspace as Rik suggested with -aa after enabling the proper compile time configuration option. So for apps that needs say 3G per-process it should work just fine. But of course for anything that needs more than that 64bit is the right way to go :)
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