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Message-ID: <40CD38FA.6070906@luukku.com>
Date: Mon, 14 Jun 2004 08:34:50 +0300
From: Jani tiainen <redetin AT luukku DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: nice not setting above/below normal
References: <1981E79C7C98A547B36D794FBEC5337002967DF6 AT MOSCNTX1> <40C9A8BE DOT DF5B7EAF AT dessent DOT net> <20040613230958 DOT GA4084 AT efn DOT org> <40CCFF18 DOT C6CEFBAA AT dessent DOT net>
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Brian Dessent wrote:
> Yitzchak Scott-Thoennes wrote:
> 
>>On Fri, Jun 11, 2004 at 05:42:38AM -0700, Brian Dessent wrote:
>>
>>>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).
>>
>>Is that correct?  Shouldn't idle be 3 to allow the full 1-15 range?
> 
> 
> According to sysinternals' Process Explorer, idle is indeed 4.  I
> haven't double checked with anything on MSDN but I don't see why it
> would not be displaying the correct thing, given that it shows the
> priority on the 0-31 scale for every process so it must be using the
> NTDLL level calls.

Hmm, that's pretty complex way to do things:

There is actually three levels: Background/Foreground process, base 
priority, and then special "thread priority" that has seven more modifiers.

Complete text can be found at:

<http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/scheduling_priorities.asp>

-- 

Jani Tiainen


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