Re[2]: "3.5GB user address space" option.

From: Oleg A. Yurlov (kris@spylog.com)
Date: Thu Oct 18 2001 - 08:47:06 EST

        Hi,

Thursday, October 18, 2001, 1:09:14 PM, you wrote:

AA> 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.

AA> Actually 3.5G per-process is theoretically possible using a careful
AA> userspace as Rik suggested with -aa after enabling the proper
AA> compile time configuration option. So for apps that needs say 3G
AA> per-process it should work just fine. But of course for anything that
AA> needs more than that 64bit is the right way to go :)

        Thanks to all, problem solved :-) Now apps can use about 3.5G.

AA> Andrea
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--
Oleg A. Yurlov aka Kris Werewolf, SysAdmin      OAY100-RIPN
mailto:kris@spylog.com                          +7 095 332-03-88

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