On 2018-12-03, John Ogness <john.ogness@xxxxxxxxxxxxx> wrote: >>>> I've found 2 examples for RT applications: >>>> 1. https://wiki.linuxfoundation.org/realtime/documentation/howto/applications/application_base >>>> 2. https://github.com/emagii/training-materials/blob/master/lab-data/realtime/rttest/data/rttest.c >> >> Still, about the 2nd example above, it is intended to use for testing >> RT latency, but there is no priority setting in yet. >> Do you think it was meant to be executed together with chrt, or is it >> that it is not required to set priority because there are no threads >> in that example ? > > The 2nd example is basically a minimal cyclictest(8) implementation. In > my opinion, it probably only makes sense to run that application with > chrt(1). For example: > > sudo chrt -p 98 ./rttest Yes, the correct syntax is: sudo chrt -f 98 ./rttest Sorry. > Choosing a lower priority might be useful if the tester is interested in > latencies _at that priority_. > > John Ogness
