Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751688AbZIEMvZ (ORCPT ); Sat, 5 Sep 2009 08:51:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751385AbZIEMvY (ORCPT ); Sat, 5 Sep 2009 08:51:24 -0400 Received: from mail-fx0-f217.google.com ([209.85.220.217]:34842 "EHLO mail-fx0-f217.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751365AbZIEMvX (ORCPT ); Sat, 5 Sep 2009 08:51:23 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=MnK49nJWjkDeL/U1qYFVmC1OFEM3UNTj/77pIRs2xPEGT7ymipgWOWChRDhANQvf7R ncqihwvEa9GRBulAlIPiFD4o6evofpLQc9uDcifxriYZ2A4LlxIq4xhXB0s+KoNiotsJ WVsJOq5K6eV1MAqQ5Om89b9Rj55yTLoaP/YdA= MIME-Version: 1.0 Date: Sat, 5 Sep 2009 08:51:24 -0400 Message-ID: <194f62550909050551n3ac70080u528ae8a9322d4a5a@mail.gmail.com> Subject: [ARM9] OOM with plenty of free swap space? From: Clemens Eisserer To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3789 Lines: 87 Hi, I am using a Nokia-770 internet tablet (ARM9) running a 2.6.16.27 (precompiled wlan driver) kernel as a small buissness server (postgres, tor, samba, lighttp). It works quite well, however I recently discovered that postgres was killed by the oom killer (log below), although plenty of free swap was available. Its a really small database so it should easily fit in the 64mb main memory. Any idea what could the reason for this OOM? Thank you in advance, Clemens [17676.783874] oom-killer: gfp_mask=0x201d2, order=0 [17676.797241] [] (dump_stack+0x0/0x14) from [] (out_of_memory+0x40/0x1d8) [17676.797393] [] (out_of_memory+0x0/0x1d8) from [] (__alloc_pages+0x240/0x2c4) [17676.797515] [] (__alloc_pages+0x0/0x2c4) from [] (__do_page_cache_readahead+0x150/0x324) [17676.797637] [] (__do_page_cache_readahead+0x0/0x324) from [] (do_page_cache_readahead+0x64/0x70) [17676.797760] [] (do_page_cache_readahead+0x0/0x70) from [] (filemap_nopage+0x190/0x3ec) [17676.797943] r7 = 00000000 r6 = 00219560 r5 = 00000000 r4 = C25E0000 [17676.798004] [] (filemap_nopage+0x0/0x3ec) from [] (__handle_mm_fault+0x2fc/0x96c) [17676.798126] [] (__handle_mm_fault+0x0/0x96c) from [] (do_page_fault+0xe4/0x214) [17676.798248] [] (do_page_fault+0x0/0x214) from [] (do_DataAbort+0x3c/0xa4) [17676.798339] [] (do_DataAbort+0x0/0xa4) from [] (ret_from_exception+0x0/0x10) [17676.798461] r8 = 00000000 r7 = 40639540 r6 = 40639560 r5 = 00000001 [17676.798553] r4 = FFFFFFFF [17676.798583] Mem-info: [17676.798614] DMA per-cpu: [17676.798675] cpu 0 hot: high 18, batch 3 used:2 [17676.798706] cpu 0 cold: high 6, batch 1 used:0 [17676.798767] DMA32 per-cpu: empty [17676.798797] Normal per-cpu: empty [17676.798828] HighMem per-cpu: empty [17676.798950] Free pages: 1172kB (0kB HighMem) [17676.799011] Active:5576 inactive:6815 dirty:0 writeback:231 unstable:0 free:293 slab:1257 mapped:12129 pagetables:374 [17676.799133] DMA free:1172kB min:1024kB low:1280kB high:1536kB active:22304kB inactive:27260kB present:65536kB pages_scanned:91 all_unreclaimable? no [17676.799224] lowmem_reserve[]: 0 0 0 0 [17676.799285] DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no [17676.799377] lowmem_reserve[]: 0 0 0 0 [17676.799468] Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no [17676.799530] lowmem_reserve[]: 0 0 0 0 [17676.799621] HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no [17676.799682] lowmem_reserve[]: 0 0 0 0 [17676.799743] DMA: 33*4kB 4*8kB 1*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 1172kB [17676.799896] DMA32: empty [17676.799926] Normal: empty [17676.799957] HighMem: empty [17676.800018] Swap cache: add 12847, delete 11756, find 42323/43010, race 0+0 [17676.800079] Free swap = 167716kB [17676.800109] Total swap = 198272kB [17676.800170] Free swap: 167716kB [17676.804534] 16384 pages of RAM [17676.804565] 638 free pages [17676.804595] 1096 reserved pages [17676.804626] 1257 slab pages [17676.804656] 19580 pages shared [17676.804718] 1091 pages swap cached [17676.805267] Out of Memory: Kill process 1535 (postgres) score 11478 and children. [17676.805358] Out of memory: Killed process 1537 (postgres). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/