Messages in this thread | | | Date | Wed, 13 Mar 2013 17:23:14 +0100 | From | Udo van den Heuvel <> | Subject | Re: 3.6.11: khubd issue SLAB related? |
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On 2013-03-11 22:23, David Rientjes wrote: > On Fri, 8 Mar 2013, Udo van den Heuvel wrote: > >> [3663200.799579] SLAB: Unable to allocate memory on node 0 (gfp=0xd0) >> [3663200.799581] cache: size-65536, object size: 65536, order: 4 >> [3663200.799583] node 0: slabs: 6/6, objs: 6/6, free: 0 >> [3663200.799585] pwc: Oops, could not allocate memory for pwc_device. > > You have memory freed, but like your earlier page allocation failure on > mount, it is too fragmented. This is an order-4 page allocation, the > kmalloc() of struct pwc_device, and you don't even have any order-3 pages > that are available. Are you running with CONFIG_COMPACTION enabled?
Yes.
> If not, enable it and try again, or get root and manually try to > defragment memory by doing echo 1 > /proc/sys/vm/compact_memory.
This needs to be done regularly, I assume?
> If so, try killing a memory hogging process to free some memory and > attempt to get some higher order pages available.
It's a 8GB box (7.5GB available to software) with modest load. Mostly email & web browsing, some torrents, nntp stuff, etc. Nothing weird. Around 4.8G in buffers/cache right now.
Why is this issue occurring? Why did I not see this in the past?
Udo
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