On 11/16/2016 04:17 PM, Kevin Fenzi wrote: > On Wed, 16 Nov 2016 14:17:46 +0100 > Mikolaj Izdebski <mizdebsk@xxxxxxxxxx> wrote: > >> Michael Simacek pointed out that koschei-backend01.phx2 has 20 GB of >> physical memory, while Ansible inventory vars specify only 4 GB. >> >> Does anyone know where this difference comes from? Did anyone increase >> VM settings without committing them to Ansible git repo? If so, what >> was the reason? > > It might have been me... bumping the memory up to see if it helped it > with memory usage. ;( But usually when I make those changes, I also > make them in ansible, and I don't recall making this one, so perhaps it > was someone else. ;( That won't help much with swap usage by itself. We are limiting RSS for systemd services, any virtual memory beyond limit (currently 3 GB) is swapped to disk. So it ends up with swap usage above 80 %, but mostly free physical memory - below 25 %. > Anyhow, the way we setup hosts in ansible they have the memory they are > set for in vars, and also we set max_memory to 5* that value. ie, this > host was set for 4GB memory, so max was 20GB and it was dynamically > increased to that. Right, now I remember seeing this. > Shall I decrease it back to 4GB? (That may need a reboot). Not needed right now. I'll be reinstalling it as Fedora 25 after GA. When reinstalling I would like to add more swap (4 GB instead of 2 GB; that would require a custom kickstart, IIUC) and set max_mem_size to 4 GB. Any reason not to do this? Thanks, -- Mikolaj Izdebski Software Engineer, Red Hat IRC: mizdebsk _______________________________________________ infrastructure mailing list -- infrastructure@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to infrastructure-leave@xxxxxxxxxxxxxxxxxxxxxxx
