I think its sched_fair.c -- Thank you, Dilip -----Original Message----- From: "Robert P. J. Day" <rpjday@crashcourse.ca> Date: Thu, 17 May 2012 23:04:46 To: <kernelnewbies@kernelnewbies.org> Subject: where is the formula for calculating kernel process priority?   in which source file is the actual formula for calculating a process' priority based on its niceness, behaviour, etc?  thanks. rday -- ======================================================================== Robert P. J. Day                                 Ottawa, Ontario, CANADA                         http://crashcourse.ca Twitter:                                       http://twitter.com/rpjday LinkedIn:                               http://ca.linkedin.com/in/rpjday ======================================================================== _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies