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renke brausse:
James,
I've also raised the maximum number of open file descriptors for the debian-tor user. In /etc/security/limits.conf I added debian-tor soft nofile 65000 debian-tor hard nofile 65000 I'm not sure if this worked because (even after reboot) sudo -u debian-tor bash ulimit -Hn returns 4096.
I'm currently not in front of a Debian box but I believe you will need to change the pam.d configuration, the limits module is imho not loaded in the su(do) configuration.
James, if you use the default init.d script that comes with torproject's tor package you shouldn't have to worry about file descriptors.
You can verify it via
grep open /proc/<tor pid>/limits
I see you are only running a single tor instance. If you are on a GBit/s link you certainly want to run more than one instance.
The 3 months graph on atlas show a steady grow in used bw, so it looks like it will continue that way.