I have set up nginx to connect to php5-fpm through unix socket instead of tcp. I've read that this has less overhead and hence boost performance. Now I'm wondering what should be the proper permission ...
I frequently get this error on random pages when the are like ~+10K connections (netstat -an |grep 80 |wc -l). This happens while there is still +10GB of free memory and server load is less than 3. ...