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re: pbulk using tmpfs

> I'm fairly sure that fork work fail (cleanly) for 'lack of physical
> memory' or 'lack of KVA', at least not without the world exploding
> at the same time. So I'd guess you are just hitting the 'ulimit -p'
> soft limit on the number of processes.

FYI: fork() hangs if there is not enough KVA, in particular if
KVA is so fragmented that a 256KiB allocation isn't possible.



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