Thanks Maxim and GreenGecko for the insights
The worker process does match my number of cpu cores (running on 8 cores atm)
How can i know the number of handshakes per seconds occurring on the server
The openssl speed result have been posted on http://pastebin.com/hNeVhJfa for readability
You can find my full list of ssl ciphers here ---> http://pastebin.com/7xJRJgJC
If you can suggest "faster ciphers" with same level of compatibility , i would be awesome
Will a faster cpu actually solve the issue ?
My cpu load never reached a value > 0.50 as far as i know and average is like 0.30