Hello Robert,

On Sun, 30 Jun 2019 09:54:14 -0400 Robert Moskowitz <r...@htt-consult.com> 
wrote:

> And the Fedora21 image is limited to 1GB:
> 
> Jun 30 01:53:35 lx140e kernel: [  13357]   107 13357   884212 215032  3043328 
>    72575             0 qemu-system-x86
> Jun 30 01:53:35 lx140e kernel: 
> oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/machine.slice/machine-qemu\x2d3\x2dfedora21.scope,task=qemu-system-x86,pid=13357,uid=107
> Jun 30 01:53:35 lx140e kernel: Out of memory: Killed process 13357 
> (qemu-system-x86) total-vm:3536848kB, anon-rss:860128kB, file-rss:0kB, 
> shmem-rss:0kB
> Jun 30 01:53:35 lx140e kernel: oom_reaper: reaped process 13357 
> (qemu-system-x86), now anon-rss:0kB, file-rss:12kB, shmem-rss:0kB
> Jun 30 01:53:36 lx140e journal[878]: internal error: End of file from qemu 
> monitor
> Jun 30 01:53:36 lx140e systemd[1]: machine-qemu\x2d3\x2dfedora21.scope: 
> Succeeded.
> Jun 30 01:53:36 lx140e systemd-machined[760]: Machine qemu-3-fedora21 
> terminated.
> 
> A new kernel came out today, and I installed that and rebooted.  So let's see 
> what happens tonight...

Looking at your other post, it seems that some process is requesting a
bunch of memory during the night, and the kernel kills the most memory
consumer ones to make room for the new one (and according to other
criteria). I had this exact same behavior when a rsync-based backup
was running overnight: it was listing files from an enormous disk, the
amount of memory for this was huge and firefox and other
big memory eaters being killed nearly every night.


Regards,

-- 
wwp

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