Re: Stresstest stops with QueueException: too many open files

Nonpersistent messages are swapped to disk. Check Store Swiftlet/Swap and then "rollover-size". This is the file size at which a current .swap file is closed and a new one is created. The old .swap files are deleted when all messages of that particular file are consumed. Default for rollover-size is 10 MB.

What happens on your side is that 900+ swap files are created but never deleted (because you don't consume) and that you've reached your ulimit which seems to be 1024. Check ulimit -n.

I recommed to increase ulimit or to increase rollover-size, e.g. 50 MB.