Messages in this thread | | | From | "R. J. Wysocki" <> | Subject | Re: Autotune swappiness01 | Date | Mon, 26 Jul 2004 12:54:01 +0200 |
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On Monday 26 of July 2004 12:29, Con Kolivas wrote: > R. J. Wysocki wrote: > > On Monday 26 of July 2004 11:31, Con Kolivas wrote: > >>R. J. Wysocki wrote: > >>>On Monday 26 of July 2004 03:09, Con Kolivas wrote: > >>>>Con Kolivas writes: > >>>>>Andrew Morton writes: > >>>>>>Seriously, we've seen placebo effects before... > >>>>> > >>>>>I am in full agreement there... It's easy to see that applications do > >>>>>not swap out overnight; but i'm having difficulty trying to find a way > >>>>>to demonstrate the other part. I guess timing the "linking the kernel > >>>>>with full debug" on a low memory box is measurable. > >>>> > >>>>I should have said - finding a swappiness that ensures not swapping out > >>>>applications with updatedb, then using that same swappiness value to do > >>>>the linking test. > >>> > >>>Please excuse me, but is that viable at all? IMHO, it's just like > >>> trying to tune a radio including volume with only one knob. I don't > >>> say it won't work, but the probability that it will is rather small, it > >>> seems ... > >> > >>Well that's what we want. I cant remember other desktop operating > >>systems setting a root only control between night and day, or between > >>copying ISOs and running applications or... > > > > I agree, but isn't it related to the fact that other desktop OSes usually > > don't run anything like updatedb nightly? > > > > Perhaps we need a bit more sophisticated swap algorithm than other OSes > > do. For example, couldn't we add an additional parameter to control the > > swapping "behavior", apart from the swappiness? Something like adding > > the second knob in my radio example? Just thinking, > > I think one knob is one knob too many already.
Can you please tell me why do you think so?
rjw
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