On 10/08/2017 08:18 AM, Marek Marczykowski-Górecki wrote:
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On Sat, Oct 07, 2017 at 10:29:11AM +0000, Holger Levsen wrote:
Hi,

so kswapd0 is using 100% CPU in one of my Qubes and this makes the fan spin
and noisy… and that Qube is hardly using any swap at all:

$ free
               total        used        free      shared  buff/cache   available
Mem:        1888212      776484      640712       70296      471016     1031616
Swap:       1048572         716     1047856

So I ran "sudo swapoff -a" (and "sudo swapon -a") and now zero swap is used but
kswapd0 is still busy swapping(?) and the fan is noisy and I wonder what to do…

Any hints / ideas?
I've seen this some time ago and `echo 3 > /proc/sys/vm/drop_caches`
helped. No idea why it is spinning...


What VM kernel are you using? I saw a great reduction in this problem when I upgraded to the latest 4.9 kernels; currently using 4.9.45-21 and the problem isn't reappearing.

--

Chris Laprise, tas...@posteo.net
https://twitter.com/ttaskett
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