News_ser prio (was: Re: Problem with Nice)
doelz at urz.unibas.ch
doelz at urz.unibas.ch
Wed Aug 22 18:19:57 AEST 1990
In article <9008211446.AA13953 at chaos.ocean.fsu.edu>, steve at CHAOS.OCEAN.FSU.EDU (Steve Van Gorder) writes:
..
>
> Another thing that seems to help somewhat is to use npri to set the nice value
> of the news_ser all the way to 0. This seems to keep the window manager from
> being paged out quite so easily and works a little better than assigning it
> a non-degrading priority, I suppose since the highest available non-
> degrading priority is 30 whereas as news_ser normaly has a priority of 26.
>
The file /usr/include/sys/schedctl.h defines the ranges as follows:
/* possible non-degrading priorities */
/* these priorities are higher than ALL normal user process priorities */
#define NDPHIMAX 30
#define NDPHIMIN 39
/* these priorities overlap normal user process priorities */
#define NDPNORMMAX 40
#define NDPNORMMIN 127
/* these priorities are below ALL normal user process priorities */
#define NDPLOMAX 128
#define NDPLOMIN 254
Back in 3.1 (or even 3.0 ? ), I remember that
news_ser was set to non-ageing 64 (or a similar value),
and there have been reasons to change that. If your
machine is heavily loaded, you could play with the npri in order
to speed up news_ser.
Good luck,
Reinhard
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