On 2017-02-08 18:41:25 [+0000], Patel, Vedang wrote: > Hi, Hi, > The results for the POSIX timers were not as I expected. The latency > for real-time kernel (v4.9.4-rt2) was worse compared to the mainline > kernel (v4.9.4). In almost all the cases, the latency is almost doubled > with the max value reaching about 10 times when performing the tests > under load. Is it also the case if you boost the priority of ktimersoftd/X threads? For clock_nanosleep, the wake-ups happen directly from hard-timer interrupt. For the posix-timer we have to delay those to the ktimersoftd thread which runs usually RT prio 1. > Thanks, > Vedang Patel > Software Engineer > Intel Corporation Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
