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[Bug 1235161] [NEW] lowmemorykiller killing processes when swap still available

 

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Hi there,

I've upgraded a number of test systems to the latest Saucy beta. I've
seen quite a few cases of processes being killed by lowmemorykiller with
the following entries being logged:

[ 291.565121] lowmemorykiller: send sigkill to 4476 (python), adj 0, size 8864
[23515.006794] lowmemorykiller: send sigkill to 944 (update-apt-xapi), adj 0, size 44175

The systems where this happens are kvm virtual machines with relatively
modest amounts of RAM allocated (256 or 512 MB) with 2 GB swap. The swap
is mostly unused when the kills occur.

I searched around and could only find references to Android for
lowmemorykiller and nothing on how to disable it. I tried the following
without success:

echo '9999,9999' > /sys/module/lowmemorykiller/parameters/adj

Any ideas on how to disable lowmemorykiller or at least prevent
processes to be killed rather than swapped?

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
lowmemorykiller killing processes when swap still available
https://bugs.launchpad.net/bugs/1235161
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