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From: nate@cpocd2.UUCP (Nate Hess)
Newsgroups: comp.emacs,comp.unix.wizards
Subject: Re: Emacs process niced after awhile
Message-ID: <757@cpocd2.UUCP>
Date: Fri, 26-Jun-87 01:44:47 EDT
Article-I.D.: cpocd2.757
Posted: Fri Jun 26 01:44:47 1987
Date-Received: Sat, 27-Jun-87 09:47:55 EDT
References: <1257@wanginst.EDU>
Reply-To: nate@cpocd2.UUCP (Nate Hess)
Organization: Intel Corp., ASIC Services Operation, Chandler AZ.
Lines: 39
Xref: mnetor comp.emacs:1270 comp.unix.wizards:2974

In article <1257@wanginst.EDU> ardis@wanginst.EDU (Mark A. Ardis) writes:
>
>Problem: 
>
>After running Gnuemacs for awhile, my process gets "nice"ed.  Response
>is pretty bad once this happens.  The threshold seems to be around 12
>minutes of CPU.  We are running Ultrix 1.2 on a VAX 785.
>
>Questions:
>
>1.  Is there a magic threshold, after which a process automatically
>	gets "nice"ed?
>

Auto-nicing can occur anytime after a process has racked up 10 minutes
of CPU time.

>2.  Is there a way to prevent this behavior for "special" processes?
>	(I.e., can Ultrix be told not to "nice" certain programs?)
>

GNU Emacs can be compiled so as to run with a negative nice (-1, say).
Look at the bottom of "config.h".  This only works if the Emacs
executable is setuid root.

>3.  Are there any alternatives to killing and restarting the process?

One way of "cheating" the autonicing is to manually nice the emacs to
+1 before it acquires 10 minutes of CPU time.  Ultrix will see that the
process has a nice factor, and not autonice it to +4 like it usually
would.

Hope this helps,
--Nate
-- 
	   "How did you get your mind to tilt like your hat?"

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