Hey, as everyone knows, if you have 1-2-4 cpus/cores, you can set the worker_cpu_affinity. For 2 cores/cpus is like this: worker_cpu_affinity 0101 1010; For 4 cores/cpus is like this: worker_cpu_affinity 1000 0100 0010 0001; But how about 8 cores/cpus? Please let me know. -- Posted via http://www.ruby-forum.com/.