On 11/6/20 3:36 AM, Patrick O'Callaghan wrote:
On Thu, 2020-11-05 at 15:23 -0800, Samuel Sieb wrote:
On 11/5/20 2:23 PM, Patrick O'Callaghan wrote:
On Thu, 2020-11-05 at 10:47 -0800, Samuel Sieb wrote:
Yes. But have you enabled zram yet for swap?
This is a clean install, so it's enabled by default and has reserved
4GB. I think that's what's actually causing the OOMs. I have 16GB of
RAM. On F32 I could run an 8GB VM with hugepages, i.e. dedicated
memory, plus normal stuff including multiple browser tabs etc. and
never had a problem. Now as soon as I try to start the VM it gets OOM
errors, and multiple Firefox tabs are failing and have to be restarted.
Check what's using the memory. zram doesn't *reserve* memory. It
doesn't use any memory until you start swapping out. Try increasing the
zram size. I would suggest at least 12GB. On my 12GB laptop, I have it
set to 12GB.
Trying to get my head around that. You mean all of your RAM is
potentially usable as compressed swap? How does that work? Surely it
can never reach that limit?
No, that's the uncompressed size. In general, the compression is at
least 3:1 so the 12GB of swap takes up a maximum of 4GB of RAM. My zram
config appears to be a little confused at this point, but here's what
one device looks like:
# zramctl
NAME ALGORITHM DISKSIZE DATA COMPR TOTAL STREAMS MOUNTPOINT
/dev/zram1 lz4 5G 4.9G 1.3G 1.4G 4
It's currently storing 4.9GB of swap data using 1.4GB of RAM.
_______________________________________________
users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
