I am experimenting with getting Machinekit running on Debian Jessie, and have run into an issue with loading capes.
After I manually load a cape: $ SLOTS=/sys/devices/bone_capemgr.*/slots $ sudo -A su -c "echo cape-bebopr-brdg:R2 > $SLOTS" ...CPU usage maxes out and I have eight systemd-udevd tasks running that are each taking a good chunk of the CPU. These typically go away after apx. 17 seconds of CPU time (each), or about 2-1/2 minutes, but I'm wondering what in the world is going on. Is this a known issue? Any ideas how to tell what the systemd-udevd processes are doing? The kernel is 3.8.13-xenomai-r78, which works fine under Wheezy. Here's an example from top shortly after loading the cape: > Tasks: 107 total, 10 running, 97 sleeping, 0 stopped, 0 zombie > %Cpu(s): 15.7 us, 84.3 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 > st > KiB Mem: 507640 total, 405956 used, 101684 free, 23924 buffers > KiB Swap: 0 total, 0 used, 0 free. 208136 cached Mem > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 1692 root 20 0 10876 1284 512 R 10.5 0.3 0:01.49 > systemd-udevd > 1693 root 20 0 10876 1312 540 R 10.5 0.3 0:01.49 > systemd-udevd > 1694 root 20 0 10876 1300 528 R 10.5 0.3 0:01.49 > systemd-udevd > 1698 root 20 0 10876 1284 512 R 10.5 0.3 0:01.48 > systemd-udevd > 1701 root 20 0 10876 1268 496 R 10.5 0.2 0:01.47 > systemd-udevd > 1719 root 20 0 10876 1088 324 R 10.5 0.2 0:01.46 > systemd-udevd > 1720 root 20 0 10876 1088 324 R 10.5 0.2 0:01.46 > systemd-udevd > 1721 root 20 0 10876 1088 324 R 10.5 0.2 0:01.46 > systemd-udevd > 661 machine+ 20 0 209288 25224 18420 S 5.9 5.0 0:11.20 lxqt-panel > 3 root 20 0 0 0 0 R 2.6 0.0 0:00.80 ksoftirqd/0 > 436 root 20 0 59688 16448 8540 S 1.0 3.2 0:02.70 Xorg > 1135 machine+ 20 0 3100 1252 808 R 0.7 0.2 0:00.51 top > 1112 machine+ 20 0 9208 1596 924 S 0.3 0.3 0:00.08 sshd -- Charles Steinkuehler char...@steinkuehler.net -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
