Re: [PATCH]O14int

[Nick Piggin]

Con Kolivas wrote:

> On Mon, 11 Aug 2003 15:44, Martin Schlemmer wrote:
>
> > On Sat, 2003-08-09 at 11:04, Con Kolivas wrote:
> >
> > > On Sat, 9 Aug 2003 01:49, Con Kolivas wrote:
> > >
> > > > More duck tape interactivity tweaks
> > > s/duck/duct
> > >
> > >
> > > > Wli pointed out an error in the nanosecond to jiffy conversion which
> > > > may have been causing too easy to migrate tasks on smp (? performance
> > > > change).
> > > Looks like I broke SMP build with this. Will fix soon; don't bother
> > > trying this on SMP yet.
> > Not to be nasty or such, but all these patches have taken
> > a very responsive HT box to one that have issues with multiple
> > make -j10's running and random jerkyness.
>
> A UP HT box you mean? That shouldn't be capable of running multiple make -j10s 
> without some noticable effect. Apart from looking impressive, there is no 
> point in having 30 cpu heavy things running with only 1 and a bit processor 
> and the machine being smooth as silk; the cpu heavy things will just be 
> unfairly starved in the interest of appearance (I can do that easily enough). 
> Please give details if there is a specific issue you think I've broken or 
> else I wont know about it.

Yeah make -j10s won't be without impact, but I think for a lot of
interactive stuff they don't need a lot of CPU, just to get it
in a timely manner. And Martin did say it had been responsive.
Sounds like in this case your changes are causing the interactive
stuff to get less CPU or higher scheduling latency?


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