/proc/sys/fs/epoll/max_user_instances=128 considered harmful

[Bron Gondwana]

Hi,

I'm chasing this up on the kernel mailing list now.  We hit exactly the
same issue on a production Postfix machine, which also uses epoll in
this way.

I've taken your suggestions of 1024 as a good point - I've also seen
that value suggested elsewhere on the internet, so that sounds
reasonable.  We've set 4096 in /etc/sysctl.conf to be certain we're OK!

Bron.