They are not overclocked. These are B-boards. On Wed, Dec 17, 2014 at 12:56:33PM -0800, A C wrote: > Is the Rpi overclocked? When overclocked it will dynamically change the > CPU frequency. You could potentially underclock it or heatsink the SoC > to keep the CPU frequency from changing. > > Also, which version of the RPi? A, B or B-plus? > > On 2014-12-17 12:22, folkert wrote: > > This is about receiving a pps signal via one of the gpio pins of the > > raspberry pi and then feeding it to ntp. > > > > Did a test for a while: every 5 minutes I would look at the output of > > ntpq -c pe -n for jitter of the pps source. > > This pps source was "measured" either in the kernel (this newly added > > gpio pps support in the raspberry pi) or in user space using my own > > rpi_gpio_ntp. > > > > > > > TL;DR: > > - kernel : 13.2us jitter on average > > - userspace: 9.6us jitter on average > > > > > > Folkert van Heusden > > > > _______________________________________________ > questions mailing list > questions@lists.ntp.org > http://lists.ntp.org/listinfo/questions
Folkert van Heusden -- Multitail est un outil permettant la visualisation de fichiers de journalisation et/ou le suivi de l'exécution de commandes. Filtrage, mise en couleur de mot-clé, fusions, visualisation de différences (diff-view), etc. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
