----- Original Message -----
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?
Why does the kernel even make that information available? I regularly have my machine made unusable when the kernel decides to kill the largest memory users (usually the mail client, or a browser tab), and it OOM kills the largest memory users, meaning the ones that will take the longest to dump to disk.
We already have records of the application being killed through OOM in the journal, we should be spared even trying to pass the core to user-space.