[Bug 280846] Low memory freezes / OOM: a thread waited too long to allocate a page

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280846

--- Comment #37 from Henrich Hartzer <henrichhartzer@tuta.io> ---
Thank you! I'm running with the new patch to vm_pageout's
vm_pageout_scan_inactive(). Will that have any impact on my system without
swap?

I've tested with ZFS with swap and without swap, as configured by the
installer. All with geli, though. My setup with UFS has geli as well.
Unfortunately, I was never tracking memory use to see if this accounting
problem was present then.

But, it's interesting that while running on UFS I had significant memory
"locked" merely by having ZFS loaded, that was unaccounted for until I removed
the module.

Might it be part of the problem that I'm using geli, whether with UFS, ZFS,
swap, or no swap? I haven't tried geli with UFS and swap, or just UFS, or just
UFS+swap (no geli.)

I don't have a way to add swap (other than file based) at the moment. I'd
probably want to setup a separate system for testing with at that point.

I wonder if Firefox has a genuine memory leak or if it's something more FreeBSD
specific.

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