[Embedded Linux] Arora makes Linux running out of memory on mini2440 board

Jeff

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Jun 17, 2011, 7:27:34 PM6/17/11

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Hi,

I am encountering a weird problem because on the first run everything was seeming ok. And then, for now, I cannot run Arora on my dev board anymore, it causes an oom-killer invoke.

Therefore, the main question is does my system fits the minimum requirements ? So, here it is a little recap.

Hardware:

FriendlyARM mini2440 board

ARM 920T 400MHZ µP

64MB SDRAM

1GB NAND

Software:

Linux kernel 2.6.39.1

Emdebian rootFS on UBIFS partition

Qt 4.7.3 for Embedded Linux

Tslib

Arora 0.11.0

I have cross-compiled Qt, tslib and Arora without any problem, using the emdebian cross-toolchain.

All demos provided with Qt are running on my board.

Here is the qmake.conf file I've used to cross-compile Arora (most part from emdebian but a little tweaked for my config)

MAKEFILE_GENERATOR = UNIX

TEMPLATE = app

CONFIG += qt warn_on release incremental link_prl

QT += core gui

QMAKE_INCREMENTAL_STYLE = sublib

include(/usr/local/Qt/mkspecs/common/unix.conf)

include(/usr/local/Qt/mkspecs/common/g++.conf)

include(/usr/local/Qt/mkspecs/common/linux.conf)

CROSS_GNU_ARCH = arm-linux-gnueabi

warning("preparing QMake configuration for $$CROSS_GNU_ARCH")

CONFIG += $$CROSS_GNU_ARCH

QMAKE_CC = $$CROSS_GNU_ARCH-gcc

QMAKE_CXX = $$CROSS_GNU_ARCH-g++

QMAKE_LINK = $$CROSS_GNU_ARCH-g++

QMAKE_LINK_SHLIB = $$CROSS_GNU_ARCH-g++

QMAKE_LINK_C = $$CROSS_GNU_ARCH-gcc

QMAKE_LINK_C_SHLIB = $$CROSS_GNU_ARCH-gcc

QMAKE_CFLAGS_RELEASE += -march=armv4t -mtune=arm920t

QMAKE_CXXFLAGS_RELEASE += -march=armv4t -mtune=arm920t

QMAKE_CFLAGS_DEBUG += -march=armv4t -mtune=arm920t

QMAKE_CXXFLAGS_DEBUG += -march=armv4t -mtune=arm920t

QMAKE_INCDIR += /usr/local/tslib/include

QMAKE_LIBDIR += /usr/local/tslib/lib

QMAKE_LFLAGS += -Wl,-rpath-link=/usr/local/tslib/lib

#QMAKE_INCDIR = /usr/$$CROSS_GNU_ARCH/include/

#QMAKE_LIBDIR = /usr/$$CROSS_GNU_ARCH/lib/

QMAKE_INCDIR_X11 = /usr/$$CROSS_GNU_ARCH/X11R6/include

QMAKE_LIBDIR_X11 = /usr/$$CROSS_GNU_ARCH/X11R6/lib

QMAKE_INCDIR_QT = /usr/local/Qt/include

QMAKE_LIBDIR_QT = /usr/local/Qt/lib

QMAKE_INCDIR_OPENGL = /usr/$$CROSS_GNU_ARCH/X11R6/include

QMAKE_LIBDIR_OPENGL = /usr/$$CROSS_GNU_ARCH/X11R6/lib

QMAKE_AR = $$CROSS_GNU_ARCH-ar cqs

QMAKE_OBJCOPY = $$CROSS_GNU_ARCH-objcopy

QMAKE_STRIP = $$CROSS_GNU_ARCH-strip

load(qt_config)

I am available for any clarification.

Thank you in advance for time you will spend to answer me.

Best regards,

Jeff

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Jun 18, 2011, 11:09:54 AM6/18/11

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Hi,

A new input, I have forgotten to tell you that I have simply copied Arora's executable in /usr/bin directory of my dev board and I run it with the following command :

# arora -qws

I don't know if Arora needs extra data to run properly. I didn't made the make install step.

If you need the error log when oom-killer is invoked, I can post it

Best regards.

Diego Iastrubni

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Jun 18, 2011, 12:00:37 PM6/18/11

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Can you reproduce this with the browser demo available from Qt4?

Jeff

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Jun 18, 2011, 6:56:05 PM6/18/11

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Hi,

No problem with the demo, it runs with an error but it runs well.

root@minideb:/usr/local/Qt/demos/embedded/anomaly# ./anomaly -qws

Application asked to unregister timer 0x1d000004 which is not registered in this thread. Fix application.

Here is the log on the serial console for arora:

root@minideb:~# arora -qws

arora invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0

[<c0030320>] (unwind_backtrace+0x0/0xf0) from [<c00716a8>] (T.374+0x50/0x154)

[<c00716a8>] (T.374+0x50/0x154) from [<c00717e8>] (T.373+0x3c/0x22c)

[<c00717e8>] (T.373+0x3c/0x22c) from [<c0071c20>] (out_of_memory+0x248/0x300)

[<c0071c20>] (out_of_memory+0x248/0x300) from [<c0074cfc>] (__alloc_pages_nodema

sk+0x4b8/0x638)

[<c0074cfc>] (__alloc_pages_nodemask+0x4b8/0x638) from [<c0070724>] (filemap_fau

lt+0x2b8/0x3b0)

[<c0070724>] (filemap_fault+0x2b8/0x3b0) from [<c00831e4>] (__do_fault+0x50/0x3b

4)

[<c00831e4>] (__do_fault+0x50/0x3b4) from [<c00840e4>] (handle_pte_fault+0x24c/0

x590)

[<c00840e4>] (handle_pte_fault+0x24c/0x590) from [<c0084870>] (handle_mm_fault+0

xa0/0xb4)

[<c0084870>] (handle_mm_fault+0xa0/0xb4) from [<c003109c>] (do_page_fault+0xdc/0

x1c4)

[<c003109c>] (do_page_fault+0xdc/0x1c4) from [<c002b23c>] (do_PrefetchAbort+0x34

/0x94)

[<c002b23c>] (do_PrefetchAbort+0x34/0x94) from [<c002bec0>] (ret_from_exception+

0x0/0x10)

Exception stack(0xc3065fb0 to 0xc3065ff8)

5fa0: 0461f6dc 046421b8 bedd150c 0000005c

5fc0: 00000000 0461f6dc 00000002 00000000 0461f6da 00000001 bedd15bc ffffffff

5fe0: 42443080 bedcd368 421c36d4 421b8c6c 60000010 ffffffff

Mem-info:

Normal per-cpu:

CPU 0: hi: 18, btch: 3 usd: 2

active_anon:12728 inactive_anon:30 isolated_anon:0

active_file:0 inactive_file:42 isolated_file:0

unevictable:0 dirty:0 writeback:0 unstable:0

free:255 slab_reclaimable:163 slab_unreclaimable:951

mapped:51 shmem:32 pagetables:134 bo

Normal free:1020kB min:1016kB low:1268kB high:1524kB active_anon:50912kB inactiv

e_anon:120kB active_file:0kB inactive_file:168kB unevictable:0kB isolated(anon):

0kB isolated(file):0kB present:65024kB mlocked:0kB dirty:0kB writeback:0kB mappe

d:204kB shmem:128kB slab_reclaimable:652kB slab_unreclaimable:3804kB kernel_stac

k:416kB pagetables:536kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned

:1 all_unreclaimable? yes

lowmem_reserve[]: 0 0

Normal: 27*4kB 6*8kB 2*16kB 8*32kB 7*64kB 1*128kB 0*256kB 0*512

8kB 0*4096kB = 1020kB

82 total pagecache pages

0 pages in swap cache

Swap cache stats: add 0, delete 0, find 0/0

Free swap = 0kB

Total swap = 0kB

16384 pages of RAM

363 free pages

1270 reserved pages

770 slab pages

160 pages shared

0 pages swap cached

[ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name

[ 809] 0 809 624 101 0 -17 -1000 udevd

[ 911] 0 911 623 102 0 -17 -1000 udevd

[ 1122] 0 1122 1333 77 0 0 0 wpa_supplicant

[ 1142] 0 1142 575 65 0 0 0 dhclient

[ 1228] 0 1228 6917 104 0 0 0 rsyslogd

[ 1260] 0 1260 618 38 0 0 0 cron

[ 1269] 0 1269 1469 90 0 -17 -1000 sshd

[ 1288] 0 1288 424 17 0 0 0 getty

[ 1289] 0 1289 424 17 0 0 0 getty

[ 1290] 0 1290 424 17 0 0 0 getty

[ 1291] 0 1291 424 17 0 0 0 getty

[ 1292] 0 1292 424 17 0 0 0 getty

[ 1293] 0 1293 424 17 0 0 0 getty

[ 1294] 0 1294 788 69 0 0 0 login

[ 1295] 0 1295 623 100 0 -17 -1000 udevd

[ 1297] 0 1297 804 96 0 0 0 bash

[ 1301] 0 1301 29656 11911 0 0 0 arora

Out of memory: Kill process 1301 (arora) score 761 or sacrifice child

Killed process 1301 (arora) total-vm:118624kB, anon-rss:47440kB, file-rss:204kB

Killed

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