Hi After fixing the realtime prios which got shuffled due to other irq thread names I just tested the realtime latency for interrupts on the i.mx35. With our own systemtimer which does not get into the way of the measurement interrupt this kernel has 30µs worst time (caveat: short measurement period) interrupt latency and usermode can keep up with a 2400kHz interrupt rate. While the usermode performance seems to be largely unchanged (but i haven't tested very thoroughly) the interrupt latency went down about 10µs coming from the 3.0-rt series. Its really nice to see that kind of improvement.
Thanks Tim Ignore the legalese please: Hottinger Baldwin Messtechnik GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany | www.hbm.com Registered as GmbH (German limited liability corporation) in the commercial register at the local court of Darmstadt, HRB 1147 Company domiciled in Darmstadt | CEO: Andreas Huellhorst | Chairman of the board: James Charles Webster Als Gesellschaft mit beschraenkter Haftung eingetragen im Handelsregister des Amtsgerichts Darmstadt unter HRB 1147 Sitz der Gesellschaft: Darmstadt | Geschaeftsfuehrung: Andreas Huellhorst | Aufsichtsratsvorsitzender: James Charles Webster The information in this email is confidential. It is intended solely for the addressee. If you are not the intended recipient, please let me know and delete this email. Die in dieser E-Mail enthaltene Information ist vertraulich und lediglich für den Empfaenger bestimmt. Sollten Sie nicht der eigentliche Empfaenger sein, informieren Sie mich bitte kurz und loeschen diese E-Mail. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
