Hi everybody, here is a quick first report on an issue that appeared with Xenomai 2.5.5 --- NOTE: 2.5.4 (and earlier) DOES NOT have this issue.
We run multiple real-time processes, synchronized by semaphores and interprocess communication using shared memory. All is cleanly implemented using the xenomai real-time functions, no mode switches. The different processes are distributed on different processors of our multi-core machine using rt_task_spawn() with the T_CPU directive. Up to version 2.5.4, this worked fine. With version 2.5.5 (and 184.108.40.206), the processes hang after a few seconds of running (CPU consumption goes to zero), and usually one of them hangs so badly that it cannot be killed anymore with kill -9 -- thus reboot is required. The problems happens on BOTH our i386 machine (Dell 8-core, ubuntu 9.04, kernel 220.127.116.11) AND x86_64 machine (Dell 8 core, ubuntu 9.10, kernel 18.104.22.168). Thus, this seems to be specific to the xenomai release 2.5.5 and higher. No "dmesg" print-outs when this error occurs. We will try to create a simple test program to illustrate the problem, but maybe the issue is already obvious to some of the experts on this list. Best wishes, -Stefan _______________________________________________ Xenomai-core mailing list Xenomaiemail@example.com https://mail.gna.org/listinfo/xenomai-core