On Do, 22.03.18 08:46, Zbigniew Jędrzejewski-Szmek (zbyszek@in.waw.pl) wrote:
On Wed, Mar 21, 2018 at 10:30:09PM -0600, Chris Murphy wrote:
For Fedora 27 it says this:
Fedora Workstation to a laptop or desktop computer that has at least 1 GHz processor, 1 GB RAM, and 10 GB space available
https://getfedora.org/en/workstation/download/
When I set a VM to 1G it's always unusable. Sometimes it's PackageKit that crashes first, which causes systemd-coredump to spin up and run out of memory next, and then oom killers start killing off various processes. Sometimes the oom killing just starts happening without a prior crash. In any case I never get a desktop.
With 1.5G RAM I usually get a desktop but then if anything crashes, and it seems like PackageKit is crashing often when under memory pressure (?), it kicks off systemd-coredump which makes the memory problem worse
systemd-coredump should probably short-circuit the coredump in oom conditions. I'm not sure what the exact conditions should be, maybe if the amount of free RAM is lower then the core size?
Hmm, to be frank, I wasn't aware the kernel would trigger coredump handling in case of OOM. This feels a bit like making things better and then making things worse again ;-)
I wonder if there's any way to detect the reason the kernel calls the coredump handlers, i.e. that it can tell us whether OOM triggered it or anything else.
Lennart