From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 18 May 2001 01:57:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 18 May 2001 01:57:14 -0400 Received: from vpn.moodlogic.com ([64.81.60.70]:20463 "EHLO uzo.telecoma.net") by vger.kernel.org with ESMTP id ; Fri, 18 May 2001 01:57:04 -0400 Date: Fri, 18 May 2001 08:33:05 +0200 From: firenza@gmx.net To: linux-kernel@vger.kernel.org Subject: java/old_mmap allocation problems... Message-ID: <20010518083305.C7657@telecoma.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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) or more than 1.1gb on 2.2.18 (SMP/2gb phys mem)... 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