modprobe up again

Posted by Nico Golde in random blurb
Tuesday, January 10. 2006

The server is up again.
Yesterday it was down after we noticed that it has some problems.
First I thought it is a hardware issue but after Strato checked (its in a Strato rack) they told us that its not an hardware issue. It seems that the kernel randomly killed processes cause another process (think it was the database) used nearly all of the RAM and also swap space ;(

Talking about logs it looks like:

__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process apache2
VM: killing process snort
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process apache2
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process cron
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)

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Guten Tag.

Fehlt eigentlich nur noch:

VM: killing user root

Freundlichst,

Christoph

#1 Gartennazi (Homepage) on 2006-01-10 14:47 (Reply)

It's not a bug, it's a feature. Read the english malloc(3) manpage, the german one is totally incomplete. Killing tasks at random (and not returning NULL in malloc()) can be switched off with a sysctl i think. This is an insane "feature" in my eyes...

Tobias

ps: yes i know this is old, but anyways...

#2 Tobias Ulmer on 2006-02-22 09:08 (Reply)

This is really insane, thanks

#3 nion (Homepage) on 2006-02-22 09:19 (Reply)

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