maxikrie opened a new issue, #8207: URL: https://github.com/apache/nuttx/issues/8207
I am using a simple usleep(100); and I noticed that the actual delay is 140 us. My specific configuration is a tickless scheduler where USEC_PER_TICK is 1. For comparison I have set up a thread that waits on sigwaitinfo(&mask, &info);, which is signaled by a hardware timer with a timeout of 100 us. Using clock_systime_ticks() for timing I see that this approach almost gets precisely done what I am expecting. From what I am understanding usleep employs signals as well under the hood, however using clock_systime_ticks() for analysis it seems that it performs significantly worse. Is this expected due to the overhead? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
