On Fri, Aug 23, 2013 at 10:53:02AM +0200, Martin Mokrejs wrote: > Hi, > I tried to figure out what this message really means. I came to > https://rt.wiki.kernel.org/index.php/Frequently_Asked_Questions > but I am still lost. I lack in the FAQ some user-related information. > The first paragraph is still unclear to me. I have a i7-2640M based > laptop, hyperthreading is enabled by BIOS but I shut down the two > emulated cores by (no BIOS option to disable HT): > > Would you please clarify what the "[sched_delayed] sched: RT throttling > activated" > really means?
It means you have (a) real-time task(s) that consume significant amount of time. At some point we throttle them in an attempt to keep the system from falling over. > Is that because there is some RT-requiring application on my system? Yep. > I don't know of any (or don't care about real-time responsiveness except that > ALSA > drivers require me to have CONFIG_SND_HRTIMER=y). Per Goggle answers could the > culprit be nfsd? Then I will recompile is as a module. Unlikely, I don't think I've ever seen anybody run their nfsd with RT priority. Also, you can run RT tasks regardless of the config options. SCHED_RR and SCHED_FIFO are POSIX specified and always available. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
