Page Allocation Failure

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CentOS 6.4

/var/log/messages-20131013:Oct 9 03:16:36 vixen kernel: EMT: page allocation failure. order:4, mode:0xd0
/var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page allocation failure. order:2, mode:0x20
/var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 20 16:00:47 vixen kernel: sshd: page allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: swapper: page allocation failure. order:1, mode:0x20
/var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page allocation failure. order:2, mode:0x20
/var/log/messages-20131027:Oct 23 10:22:41 vixen kernel: httpd: page allocation failure. order:1, mode:0x20

I know It’s been discussed about a year ago but I can’t view the bug reports mentioned in the thread. It seems to require an active RHEL
subscription. What was that workaround again?

Thanks

7 thoughts on - Page Allocation Failure

  • —– Original Message —–
    | CentOS 6.4
    |
    | /var/log/messages-20131013:Oct 9 03:16:36 vixen kernel: EMT: page
    | allocation failure. order:4, mode:0xd0
    | /var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:00:47 vixen kernel: sshd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: swapper:
    | page
    | allocation failure. order:1, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 23 10:22:41 vixen kernel: httpd: page
    | allocation failure. order:1, mode:0x20
    |
    | I know It’s been discussed about a year ago but I can’t view the bug
    | reports mentioned in the thread. It seems to require an active RHEL
    | subscription. What was that workaround again?
    |
    | Thanks

    How much memory is in the system? Is it a NUMA machine? Can you tell me what memory looks like during these errors? It looks like a memory problem, but I’ll need more details.


    James A. Peltier Manager, IT Services – Research Computing Group Simon Fraser University – Burnaby Campus Phone : 778-782-6573
    Fax : 778-782-3045
    E-Mail : jpeltier@sfu.ca Website : http://www.sfu.ca/itservices

    “A successful person is one who can lay a solid foundation from the bricks others have thrown at them.” -David Brinkley via Luke Shaw

  • —– Original Message —–
    | CentOS 6.4
    |
    | /var/log/messages-20131013:Oct 9 03:16:36 vixen kernel: EMT: page
    | allocation failure. order:4, mode:0xd0
    | /var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131020:Oct 14 13:15:11 vixen kernel: httpd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:00:47 vixen kernel: sshd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: swapper:
    | page
    | allocation failure. order:1, mode:0x20
    | /var/log/messages-20131027:Oct 20 16:14:28 vixen kernel: sshd: page
    | allocation failure. order:2, mode:0x20
    | /var/log/messages-20131027:Oct 23 10:22:41 vixen kernel: httpd: page
    | allocation failure. order:1, mode:0x20
    |
    | I know It’s been discussed about a year ago but I can’t view the bug
    | reports mentioned in the thread. It seems to require an active RHEL
    | subscription. What was that workaround again?
    |
    | Thanks

    BTW, please don’t try to “clean up” the output. Dump a dmesg into pastebin and send us the link. There are likely other errors that we’re not able to see to determine the cause of the problem.


    James A. Peltier Manager, IT Services – Research Computing Group Simon Fraser University – Burnaby Campus Phone : 778-782-6573
    Fax : 778-782-3045
    E-Mail : jpeltier@sfu.ca Website : http://www.sfu.ca/itservices

    “A successful person is one who can lay a solid foundation from the bricks others have thrown at them.” -David Brinkley via Luke Shaw

  • Александр Кириллов a écrit :

    echo never >/sys/kernel/mm/redhat_transparent_hugepage/defrag echo no > /sys/kernel/mm/redhat_transparent_hugepage/khugepaged/defrag is something I got on several boxes here. If I remember correctly, it
    « fixes » the problem.

    HTH, Laurent.

  • Laurent Wandrebeck писал 2013-10-29 13:54:

    I will try that, thanks. Any refs to the source of the solution?

  • Thanks Laurent,

    But are you sure that’s a cure for the problem I’m having?
    Occasional page allocation failures?
    I don’t see anything of the sort in this thread.

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