Oom-killer

Openfire Openfire Support
1

JM regularly crashed after upgrading operating system from RH 7.2 to FC 4.

Messenger’‘s log doesn’'t contain any records about crash. But syslog does:

Dec 6 22:17:35 technotex kernel: oom-killer: gfp_mask=0x80d2

Dec 6 22:17:35 technotex kernel: Mem-info:

Dec 6 22:17:35 technotex kernel: DMA per-cpu:

Dec 6 22:17:35 technotex kernel: cpu 0 hot: low 2, high 6, batch 1

Dec 6 22:17:35 technotex kernel: cpu 0 cold: low 0, high 2, batch 1

Dec 6 22:17:35 technotex kernel: Normal per-cpu:

Dec 6 22:17:35 technotex kernel: cpu 0 hot: low 62, high 186, batch 31

Dec 6 22:17:35 technotex kernel: cpu 0 cold: low 0, high 62, batch 31

Dec 6 22:17:35 technotex kernel: HighMem per-cpu: empty

Dec 6 22:17:35 technotex kernel:

Dec 6 22:17:35 technotex kernel: Free pages: 2992kB (0kB HighMem)

Dec 6 22:17:35 technotex kernel: Active:58664 inactive:400 dirty:0 writeback:0 unstable:0 free:748 slab:2510 mapped:57998 pagetables:547

Dec 6 22:17:35 technotex kernel: DMA free:1080kB min:124kB low:152kB high:184kB active:11020kB inactive:0kB present:16384kB pages_scanned:11717 all_unreclaimable? yes

Dec 6 22:17:36 technotex kernel: lowmem_reserve[]: 0 239 239

Dec 6 22:17:36 technotex su(pam_unix)[26624]: session closed for user jive

Dec 6 22:17:36 technotex kernel: Normal free:1912kB min:1916kB low:2392kB high:2872kB active:223636kB inactive:1600kB present:245696kB pages_scanned:45864 all_unreclaimable? no

Dec 6 22:17:36 technotex kernel: lowmem_reserve[]: 0 0 0

Dec 6 22:17:36 technotex kernel: HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no

Dec 6 22:17:36 technotex kernel: lowmem_reserve[]: 0 0 0

Dec 6 22:17:36 technotex kernel: DMA: 04kB 18kB 116kB 132kB 064kB 0128kB 0256kB 0512kB 11024kB 02048kB 0*4096kB = 1080kB

Dec 6 22:17:36 technotex kernel: Normal: 04kB 18kB 716kB 032kB 064kB 2128kB 0256kB 1512kB 11024kB 02048kB 0*4096kB = 1912kB

Dec 6 22:17:36 technotex kernel: HighMem: empty

Dec 6 22:17:36 technotex kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0

Dec 6 22:17:36 technotex kernel: Free swap = 0kB

Dec 6 22:17:36 technotex kernel: Total swap = 0kB

Dec 6 22:17:36 technotex kernel: Free swap: 0kB

Dec 6 22:17:36 technotex kernel: 65520 pages of RAM

Dec 6 22:17:36 technotex kernel: 0 pages of HIGHMEM

Dec 6 22:17:36 technotex kernel: 1692 reserved pages

Dec 6 22:17:36 technotex kernel: 6715 pages shared

Dec 6 22:17:36 technotex kernel: 0 pages swap cached

Dec 6 22:17:36 technotex kernel: Out of Memory: Killed process 26625 (java).

/code

JM versions: 2.2.2 and 2005_12_01.

OS: Fedora Core 4 (2.6.11-1.1369_FC4 #1 Thu Jun 2 22:55:56 EDT 2005 i686 i686 i386 GNU/Linux)

JDK: Sun 1.5.0_01 and 1.5.0_05

Changing the Xmx and Xss values doesn’'t resolve the problem.

I have found some discussions:

http://www.ussg.iu.edu/hypermail/linux/kernel/0504.0/1589.html

http://dag.wieers.com/howto/compatibility/

But, I have not had time to take advantage of the advice described there.

2

Fefelov,

Can you run some updates, your Kernel is old…

  1. Add various 3rd party RPM Repositories (ensure there is a blank line at the bottom of each of the config files)

a. DAG

edit /etc/yum.repos.d/dag.repo and insert the following:

name=Dag RPM Repository for Fedora Core

  baseurl=http://apt.sw.be/fedora/$releasever/en/$basearch/dag/

enabled=1

gpgcheck=1

b. FreshRPMS

edit /etc/yum.repos.d/freshrpms.repo and insert the following:

name=FreshRPMS-Core

 baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/core

enabled=1

gpgcheck=1

#[extras]

#name=Fedora Linux $releasever - $basearch - extras

 #baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/extras

#enabled=0

#gpgcheck=1

name=FreshRPMS-Updates

 baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/updates

enabled=1

gpgcheck=1

name=FreshRPMS-Fresh

 baseurl=http://ayo.freshrpms.net/fedora/linux/$releasever/$basearch/freshrpms

enabled=1

gpgcheck=1

c. Dries

edit /etc/yum.repos.d/dries.repo and insert the following:

name=Extra Fedora rpms dries - $releasever - $basearch

 baseurl=http://ftp.belnet.be/packages/dries.ulyssis.org/fedora/linux/$releasever/$basear ch/dries/RPMS/

enabled=1

gpgcheck=1

d. NewRPMS

edit /etc/yum.repos.d/newrpms.repo and insert the following:

newrpms.sunsite.dk

name=Fedora Core 4 i386 NewRPMS.sunsite.dk

 baseurl=http://newrpms.sunsite.dk/apt/redhat/en/i386/fc4

enabled=1

gpgcheck=1

e. Install the GPG Keys for the repositories

   rpm --import http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt

   rpm --import http://freshrpms.net/packages/RPM-GPG-KEY.txt

   rpm --import http://dries.studentenweb.org/ayo/RPM-GPG-KEY.dries.txt

   rpm --import http://newrpms.sunsite.dk/gpg-pubkey-newrpms.txt
  1. Update the system (up2date -u)

Clear option 7 during configuration

  1. Reboot

  2. Run yum update

yum -y update

3

Really, my swap space was lost!

Dec 6 22:17:36 technotex kernel: Free swap = 0kB

Dec 6 22:17:36 technotex kernel: Total swap = 0kB

Dec 6 22:17:36 technotex kernel: Free swap: 0kB

/code

After restoring swap no oom-kills reappears.