Re: [ntp:questions] measuring os latency for pps

2015-08-26 Thread Dan Drown
Quoting folkert folk...@vanheusden.com: 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

Re: [ntp:questions] measuring os latency for pps

2015-08-25 Thread A C
On 2015-08-25 08:24, folkert wrote: Hi, 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

[ntp:questions] measuring os latency for pps

2015-08-25 Thread folkert
Hi, 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

Re: [ntp:questions] measuring os latency for pps

2015-08-25 Thread folkert
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