REALLY nice processes?

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2 total messages Started by Nathan Otto Siemers Mon, 04 Jan 1993 01:32

#136

Author: Nathan Otto Siemers
Date: Mon, 04 Jan 1993 01:32

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	I regularly use an sgi machine which is mainly used for cpu
intensive graphics applications.  My jobs run in the background and
number crunch.  

	Even when I nice my processes as much as possible, there is a
noticable drop in performance in interactive work.  Is there any way
to eliminate this?  I could envision the swapper swapping out
processes when an interactive job is running;  is this configurable?  


	Any help would be very much appreciated.

	Nathan Siemers
	Department of Chemistry, Cornell University
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Re: REALLY nice processes?

#139

Author: Reinhard Doelz
Date: Mon, 04 Jan 1993 09:38

26 lines
2007 bytes

In article <NS14.93Jan4013229@crux2.crux2.cit.cornell.edu>, ns14@crux2.crux2.cit.cornell.edu (Nathan Otto Siemers) writes:
...
|> 	Even when I nice my processes as much as possible, there is a
|> noticable drop in performance in interactive work.  Is there any way
|> to eliminate this?  I could envision the swapper swapping out
|> processes when an interactive job is running;  is this configurable?  

First, you could purchase a batch queuing system (like NQS) which does 
automatic non-aging priorities. Second, you could do it yourself with 
the npri(1) call. See the man page for this. Last, you could make a daemon
which greps the CPU time of, lets say, more than 1 hour and sends a STOP signal 
to there if you log in to the console. 

Regards 
Reinhard 


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