From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from gkropitz@localhost) by uzo.telecoma.net (8.8.7/8.8.7) id VAA08352 for linux-mm@kvack.org; Fri, 18 May 2001 21:06:47 +0200 Date: Fri, 18 May 2001 21:06:47 +0200 From: firenza@gmx.net Subject: java/old_mmap allocation problems... Message-ID: <20010518210647.B8318@telecoma.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org List-ID: [initially posted on linux-kernel, but someone pointed out this closer targeted list to me] hi, 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/compiled with 64GB option) or more than 1.1gb on 2.2.18 (SMP/2gb phys mem/compiled with 2GB option)... modifing /proc/sys/vm parameters didn't help either... the fact that i can allocate more memory under 2.4 than under 2.2 lets me hope that there is some possible kernel/vm tweaking that would increase those limits... any pointers would be greatly appreciated! cheers, -firenza PS: strace snippet of "java -Xmx2g" on the 2.4 system brk(0x8057000) = 0x8057000 old_mmap(NULL, 163840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x43691000 old_mmap(NULL, 2181038080, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM strace snippet of "java -Xmx1500m" on the 2.2 system old_mmap(0x2e082000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2e082000 old_mmap(NULL, 163840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2e102000 old_mmap(NULL, 1606418432, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/