[time-nuts] measuring os latency for pps

folkert folkert at vanheusden.com
Tue Aug 25 11:24:36 EDT 2015


Not sure if it is interesting for you guys but I wrote a simple program
for e.g. Linux (or any other system with the pps api implemented) that
listens on a pps source waiting for a pulse and then toggles a gpio
pin. That way you can measure the latency introduced by the the kernel
when listening from userspace. Note that there's a little extra latency
due to the gpio-pin handling.

It is on github: https://github.com/flok99/pps2gpio

Folkert van Heusden

MultiTail cok yonlu kullanimli bir program, loglari okumak, verilen
kommandolari yerine getirebilen. Filter, renk verme, merge, 'diff-
view', vs.  http://www.vanheusden.com/multitail/
Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com

More information about the time-nuts mailing list