Have you tried enabling CONFIG_HIGHMEM64G when building your kernel? With a 4GB VM space, the kernel occupies 1 GB and processes 3GB as defined by TASK_SIZE:
page.h:81:#define __PAGE_OFFSET (0xC0000000) page.h:120:#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) processor.h:268:#define TASK_SIZE (PAGE_OFFSET) I assume that these are changed when you compile with CONFIG_HIGHMEM64GB. --- Vladimir -------- Vladimir G. Ivanovic http://leonora.org/~vladimir 2770 Cowper St. [EMAIL PROTECTED] Palo Alto, CA 94306-2447 +1 650 678 8014 "e" == ej <Eric> writes: e> I am depserately trying to get a single JVM to grow beyond the 2GB e> size limit that I've hit. I've tried both the IBM and Sun JVM's but e> without any luck. They both use mmap() to allocate memory, so there e> isn't a way to drop in a better memory allocation ssytem such as the e> "hoard" malloc(). e> My Linux configuration is: Debian woody with a 2.4.17 kernel on a e> Compaq Proliant 6500 with 4 Xeon 500's and 4GB of RAM along with about e> 800MB of swap. e> I have tried the latest IBM 1.3.1, blackdown 1.3.1, and Sun 1.4 e> releases. The problems with the Sun and blackdown JVM is as e> http://developer.java.sun.com/developer/bugParade/bugs/4401509.html e> puts it...the call to mmap is just plain over the linux x86 limit. e> However, the IBM one is more mysterious...it seems to be just not e> mmaping the right spot; the last mmap just hangs (and it's not trying e> to mmap more than the limit)...it just doesn't mmap a whole gigabyte e> of process address space from the end of its binary at 0x0804d000 to e> 0x4000000. e> Does anyone have any idea how to fix this? Would it be a big job to e> fix it in the JVM? e> Thanks, e> eric. e> -- e> _____ _ ____> (_) http://ir.iit.edu/~ej _> | | Research Assistant >> |___ | | Information Retrieval Laboratory >> ______/ | Illinois Institute of Technology >> __/ e> ---------------------------------------------------------------------- e> To UNSUBSCRIBE, email to [EMAIL PROTECTED] e> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
