Thank you all very much for your insights! I was experimenting some more on the weekend, and before I could investigate everything I learned from you, CPU isolation did the trick for me (using cset just like shown in the wiki). I originally thought sched_setaffinity() would suffice, but giving the application its own CPU helped a lot. Didn't get anything over 1.735 ms for two days now. FYI: this is running on a Kontron pITX-SP http://de.kontron.com/products/boards+and+mezzanines/embedded+sbc/pitx+25+sbc/pitxsp.html. Thanks again! -- o -- 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
