Messages in this thread |  | | | Subject | Re: [PATCH] ia64: change usermode HZ to 250 | | From | Arjan van de Ven <> | | Date | Thu, 29 Jun 2006 12:55:13 +0200 |
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On Thu, 2006-06-29 at 12:48 +0200, Jes Sorensen wrote: > Alan Cox wrote: > > Ar Iau, 2006-06-29 am 05:37 -0400, ysgrifennodd Jes Sorensen: > >> You have my vote for that one. Anything else is just going to cause > >> those broken userapps to continue doing the wrong thing. We should > >> really do this on all archs though. > > > > No need, all current mainstream architectures expose a constant user HZ. > Hi,
> But you are still going to have the issue where someone installs their > own kernel and apps will break because of this?
to answer that question with one word: no.
read what Alan said: the HZ exposed to userspace is *constant*. For example, the i386 user visible HZ is 100, even if the kernel runs at a HZ of 250 or 1000.... Just when a HZ value gets exposed to userspace, it's transformed into a HZ=100 based value. And that's not a distribution thing, that's the kernel.org kernel honoring the stable-userspace-interface contract, and common sense..
Greetings, Arjan van de Ven
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