#12694 NORM Future : page allocation failure, mwifiex

Zarro Boogs per Child bugtracker at laptop.org
Tue Nov 12 02:32:39 EST 2013

#12694: page allocation failure, mwifiex
           Reporter:  Quozl   |       Owner:                          
               Type:  defect  |      Status:  new                     
           Priority:  normal  |   Milestone:  Future Release          
          Component:  kernel  |     Version:  Software Build 13.2.0-13
         Resolution:          |    Keywords:                          
        Next_action:  design  |    Verified:  0                       
Deployment_affected:          |   Blockedby:                          
           Blocking:          |  

Comment(by Quozl):

 In a similar situation was a
 recommendation to increase min_free_kbytes], which has a value of 3511 on
 my test system, and changing this affected the probability of failure;

  * 32768, no apparent change,
  * 65536, no apparent change,
  * 131072, possibly decreased frequency, but dev_alloc_skb still did fail
  * 262144, eliminated the failure entirely.

 Therefore a temporary workaround with a large impact (loss of useful
 memory) is:
  echo 262144 > /proc/sys/vm/min_free_kbytes

 Also [http://russ.garrett.co.uk/2009/01/01/linux-kernel-tuning/ Russ
 Garrett says] of min_free_kbytes that it is useful for ''swap-less
 machines, where you don’t want incoming network traffic to overwhelm the
 kernel and force an OOM before it has time to flush any buffers.''

Ticket URL: <http://dev.laptop.org/ticket/12694#comment:7>
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