page allocation failed in 2.4.24

page allocation failed in 2.4.24

[Mike Gabriel]

hi there,

can anyone tell me what these messages mean? running linux-2.4.24 on asus 
p4p800 deluxe.

Jan 31 02:38:02 galileo kernel: __alloc_pages: 0-order allocation failed 
(gfp=0xf0/0)
Jan 31 02:38:02 galileo kernel: __alloc_pages: 0-order allocation failed 
(gfp=0x1d2/0)
Jan 31 02:38:02 galileo kernel: VM: killing process slapd
Jan 31 02:38:50 galileo kernel: __alloc_pages: 0-order allocation failed 
(gfp=0xf0/0)
Jan 31 02:38:50 galileo kernel: ENOMEM in journal_get_undo_access_R9add2900, 
retrying.
Jan 31 02:38:53 galileo kernel: __alloc_pages: 0-order allocation failed 
(gfp=0xf0/0)
Jan 31 02:39:19 galileo last message repeated 3 times
Jan 31 02:39:25 galileo kernel: __alloc_pages: 0-order allocation failed 
(gfp=0x1d2/0)
Jan 31 02:39:25 galileo kernel: VM: killing process sshd
Jan 31 02:39:25 galileo kernel: __alloc_pages: 0-order allocation failed 
(gfp=0x1d2/0)
Jan 31 02:39:25 galileo kernel: VM: killing process sshd

I get plenty of them during copying (cp -av <source> <dest>) a huge amount of 
data, which is densely filled with hard links from one raid to another... the 
cp command runs in a screen session. on huge directories, it starts blasting 
other processes from the system (sshd, nmbd, spong-client, etc.)

any ideas?
mike



-- 

Oekologiezentrum
Christian-Albrecht-Universität zu Kiel
- netzwerkteam -
Mike Gabriel
Olshausenstr 75.
24118 Kiel

fon: +49 431 880-1186
mail: mgabriel@ecology.uni-kiel.de
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Re: page allocation failed in 2.4.24

[Marcelo Tosatti]

On Sun, 1 Feb 2004, Mike Gabriel wrote:

> hi there,
>
> can anyone tell me what these messages mean? running linux-2.4.24 on asus
> p4p800 deluxe.
>
> Jan 31 02:38:02 galileo kernel: __alloc_pages: 0-order allocation failed
> (gfp=0xf0/0)
> Jan 31 02:38:02 galileo kernel: __alloc_pages: 0-order allocation failed
> (gfp=0x1d2/0)
> Jan 31 02:38:02 galileo kernel: VM: killing process slapd
> Jan 31 02:38:50 galileo kernel: __alloc_pages: 0-order allocation failed
> (gfp=0xf0/0)
> Jan 31 02:38:50 galileo kernel: ENOMEM in journal_get_undo_access_R9add2900,
> retrying.
> Jan 31 02:38:53 galileo kernel: __alloc_pages: 0-order allocation failed
> (gfp=0xf0/0)
> Jan 31 02:39:19 galileo last message repeated 3 times
> Jan 31 02:39:25 galileo kernel: __alloc_pages: 0-order allocation failed
> (gfp=0x1d2/0)
> Jan 31 02:39:25 galileo kernel: VM: killing process sshd
> Jan 31 02:39:25 galileo kernel: __alloc_pages: 0-order allocation failed
> (gfp=0x1d2/0)
> Jan 31 02:39:25 galileo kernel: VM: killing process sshd
>
> I get plenty of them during copying (cp -av <source> <dest>) a huge amount of
> data, which is densely filled with hard links from one raid to another... the
> cp command runs in a screen session. on huge directories, it starts blasting
> other processes from the system (sshd, nmbd, spong-client, etc.)

Hi Mike,

How much swap do you have on this system and how much swap space is free
when you start seeing the allocation failures?

"vmstat 2" output (start it before running the tests) and "cat
/proc/slabinfo" output (before and during the tests) are useful to find
out what is happening.

Re: page allocation failed in 2.4.24

[Mike Gabriel]

hi marcelo,

> How much swap do you have on this system and how much swap space is free
> when you start seeing the allocation failures?

oh yes, when i rebooted the host yesterday, i saw a glimpse of

  swap device /dev/XXX has no swap signature (or similar)

in the kernel-message.

i did a 

  mkswap /dev/XXX; swapon /dev/XXX

and now the system works fine (for now...)

thanks for your reply,
mike

> "vmstat 2" output (start it before running the tests) and "cat
> /proc/slabinfo" output (before and during the tests) are useful to find
> out what is happening.

thanks for this info!

-- 

netzwerkteam - oekologiezentrum
Mike Gabriel
FA Geobotanik
Christian-Albrecht Universität zu Kiel
Abt. Prof. Dr. K. Dierßen
Olshausenstr. 75
24118 kiel

fon-oezk: +49 431 880 1186
fon-home: +49 431 64 74 196

mail: mgabriel@ecology.uni-kiel.de
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