Re: java/old_mmap allocation problems...

[Wayne Whitney]

In mailing-lists.linux-kernel, you wrote:

>i'm having problems to convince java (1.3.1) to allocate more
>than 1.9gb of memory on 2.4.2-ac2 (SMP/6gb phys mem) or more
>than 1.1gb on 2.2.18 (SMP/2gb phys mem)...

Take a look at a thread from January starting at this point:

http://www.uwsg.indiana.edu/hypermail/linux/kernel/0101.1/0407.html

Basically the constraint you see is due to how Linux sets up the 4GB
address space on 32-bit i386 hardware.  If you need more than 1.9GB on
2.4.x, it's not too hard to change a couple constants in the kernel to
allow somewhat more.  Feel free to email me for more details if it is
not clear after reading the above thread.

Cheers, Wayne