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From: Mark Tinguely <tinguely@casselton.net>
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>  > For a machine with 3 GB RAM, this isn't unexpected. Try rebuilding your
>  > kernel and setting maxusers to 128.
>
>  Did that, the same thing.
>
>  I do not like the fact that userlang app crashes kernel, anyway,
>  so maxusers thing is not really a solution.
>
>  Any hints why does that happen ? Bug/feature of kernel malloc ?

bump up your kernel virtual memory - see the handbook looking for the
"KVA" setting.

--Mark.