[Bug 231457] Out of swap space on ZFS

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231457

--- Comment #5 from dimka at dz.dn.ua ---
I tried this, and seen that the system is coming out of stupor state,
immediatly after the killings of the processes. Without this tuning, the system
remained very slow for a few seconds.
However, even a halving vfs.zfs.arc_max and vm.max_wired, did not solve the
problem in my case.
Also, if i suspend memory absorption on
(vm.stats.vm.v_laundry_count * vm.stats.vm.v_page_size) > 10M
the system does not kill processes, and can not purge laundry pages to swap.
Probably there is some kind of deadlock or other similar problem.

CPU:  0.0% user,  0.0% nice, 11.3% system,  0.0% interrupt, 88.7% idle
Mem: 566M Active, 147M Inact, 130M Laundry, 94M Wired, 22M Free
ARC: 29M Total, 1048K MFU, 25M MRU, 32K Anon, 1152K Header, 1387K Other
     12M Compressed, 19M Uncompressed, 1.56:1 Ratio
Swap: 7678M Total, 30M Used, 7648M Free

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