On 05/31/2016 04:09 PM, Wolfgang Netbal wrote: > Dear all, > > we have moved our application from "XENOMAI 2.6.2.1 + Linux 3.0.43" to > "XENOMAI 2.6.4. + Linux 3.10.53". Our target is an i.MX6DL. The system > is now up and running and works stable. Unfortunately we see a > difference in the performance. Our old combination (XENOMAI 2.6.2.1 + > Linux 3.0.43) was slightly faster. >
Could you quantify "slightly faster"? This is a dual kernel system, so changes on either the regular kernel side and/or the co-kernel side may have a measurable impact. > At the moment it looks like that XENOMAI 2.6.4 calls > xnpod_schedule_handler much more often then XENOMAI 2.6.2.1 in our old > system. Every call of xnpod_schedule_handler interrupts our main > XENOMAI task with priority = 95. That handler is attached to the inter-processor interrupt used for rescheduling tasks running on a remote CPU. You may want to check the CPU affinity settings of your tasks, and the way they interact/synchronize. -- Philippe. _______________________________________________ Xenomai mailing list Xenomai@xenomai.org https://xenomai.org/mailman/listinfo/xenomai
