Benjamin Herrenschmidt writes: > > Well, first it should be called once per second, not 60 times per > second, so something is wrong there...
Actually I think it was happening a lot more than 60 times per second, and klogd was losing most of the messages because they came too fast. When running the new kernel, vmstat shows 170000 context switches per second (and CPU usage never going below 5%) even when everything should be idle. My next experiment was to hack rtas_init to return 0 unconditionally. Now everything still runs fine, and the context switches per second are back down in the 2-digit range. > > Then, it wouldn't surprise me if the Pegasos RTAS didn't implement > the event scan properly. Maybe we failed silently before that ? I > doubt it's necessary there anyways. If I'm reading things correctly, rtas-event-scan-rate is the key to the frequency of attempts. And rtasd.c didn't expect this: $ od -t x1 /proc/device-tree/rtas/rtas-event-scan-rate 0000000 00 00 00 00 0000004 -- Alan Curry _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
