Hi! > > But I follow Eric and agree that if it costs that much, changing > > above sounds sane. > > Still, I could imagine some people might want to not raise freq on IO bound > > process activity, therefore this should get another ondemand param, similar > > to ignore_nice_load. > > > > I agree with Thomas here. Some of these assumptions on IO / FSB > performance with cpu speed do not hold true on various ARM platforms. > > Perhaps we could have a min_io_freq value? Which is the min speed for > the cpu to run at for IO bound activity. In the original patch, > min_io_freq = scaling_max_freq. For various arm devices I can happily > set min_io_freq to the lowest cpu speed that satisfies bus speeds. 'satisfies bus speeds' == minimum cpu frequency where i/o works at all or == minimum cpu frequency where i/o works at full speed ? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
