Re: [PATCH, RESEND2] getrusage: fill ru_maxrss value

From: KOSAKI Motohiro
Date: Wed Dec 17 2008 - 21:50:36 EST


> > Ah, you talked about /usr/bin/time? sorry, I misunderstood a bit.
> > Why time need number of pages?
> >
> > In general, getrusage()::ru_maxrss is bsd compatibility feature.
> > as far as possible, the same syscall spec is better.
> > and bsd use KB unit.
> Oh you are right. Now I searched it in FreeBSD kernel. They goes like this:
> rss = pgtok(vmspace_resident_count(vm));
> if (ru->ru_maxrss < rss)
> ru->ru_maxrss = rss;
>
> Seems pretty reasonable to stick with the same behavior. Then I really
> do not understand why /usr/bin/time does the conversion.

me too ;-)

> FreeBSD /usr/bin/time is very different and much simpler and (of
> course) does not do this conversion.
>
> So I suggest to change the patch to fill KB instead of pages and
> change /usr/bin/time to not do the conversion. What do you think?

Makes really much sense. thanks!!


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