processes are killed because of out of swap space

[Wojciech Puchar]

>>> but still - there is A LOT of memory to be reclaimed. inactive is many gigabytes on my server.
>>>
>>>> # Delay when persisstent low free RAM leads to
>>>> # Out Of Memory killing of processes:
>>>> vm.pageout_oom_seq=120
>>> set to 300.
>
> A good question is if changing this figure significantly
> changes how long before the OOM kills significantly.

yes. but they are still killed.

the problem was geom_raid5. which i found not usable anyway - in case of 
system crash filesystem is in state of total mess.

I just decided to have less space with 2 gmirrors but at least proven, 
stable and fast.

All problems disappeared now.