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Date: Wed, 11 Jun 2008 06:58:16 -0700 From: Arjan van de Ven <arjan@...radead.org> To: Jan Engelhardt <jengelh@...ozas.de> Cc: "Kok, Auke" <auke-jan.h.kok@...el.com>, solsTiCe d'Hiver <solstice.dhiver@...il.com>, linux-kernel@...r.kernel.org Subject: Re: PROBLEM: no cpu MHz in /proc/cpuinfo on 2.6.25.4-rt6 On Wed, 11 Jun 2008 15:52:57 +0200 (CEST) Jan Engelhardt <jengelh@...ozas.de> wrote: > > On Wednesday 2008-06-11 15:36, Arjan van de Ven wrote: > >> >> btw this is scary; the Mhz line in /proc/cpuinfo doesn't have > >> >> much meaning really, so applications using it and depending on > >> >> it is a rather big disaster ;-( > >> >> > >> >> Does anyone know why jackd wants to use this? > >> > >> It would be nice to have a /sys file where the CPU frequency is in, > > > >may I ask why? What would you do with it? > > Off the top off the head, just for reporting to the user. Desklets > and stuff. even then it doesn't mean much ;-( > >CPU frequency is... > >1) not something that is fixed; it changes all the time > >2) not a good indication for performance; remember the 3.4Ghz > >pentium4, a 2Ghz Core2Duo outperforms it > >3) something which the cpu itself barely honors (the clock stops > >during idle etc etc) -- If you want to reach me at my work email, use arjan@...ux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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