Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Message-ID: <40C9A8BE.DF5B7EAF@dessent.net> Date: Fri, 11 Jun 2004 05:42:38 -0700 From: Brian Dessent Organization: My own little world... MIME-Version: 1.0 To: "'cygwin-list'" Subject: Re: nice not setting above/below normal References: <1981E79C7C98A547B36D794FBEC5337002967DF6@MOSCNTX1> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Reply-To: cygwin@cygwin.com "Mironov, Leonid {PBG}" wrote: > If I am to believe windows task manager windows processes can have 6 > priority levels - realtime, high, above normal, normal, below normal and > low, but cygwin nice can set only 2: when -n parameter is above 0 priority > is set to low, when -n is below 0 priority is set to high, actual value of > -n parameter is ignored. Am I missing something or ...? > > windows XP SP1, nice 2.0.15 (sh-utuils 2.0.15.4) I don't know about 'nice', but Windows actually has 32 priority levels. Priority 0 is reserved for the system idle process, and 16-31 are reserved for real-time processes. The remaining range 1-15 are the regular (dynamic) priorities that most processes run with. In reality you don't set the priority directly this way, rather you choose a priority class (realtime, high, normal, idle; corresponding to 24, 13, 8, 4) and then a modifier (highest, above normal, normal, below normal, lowest; corresponding to +2, +1, 0, -1, -2). Thus the priorities you see in taskman consist of the four base classes, and the +2 and -2 variants of 'normal', thus: idle (4), below normal (6), normal (8), above normal (10), high (13), and realtime (24). Brian -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/