On Mon, Dec 05, 2016 at 04:24:05PM +0200, Ran Shalit wrote: > Hello, > > We need to support serial driver with real time requirements (towards specific > device with RT demands): > Every 5.3msec receive 100 bytes and 1.3msec afterwards send 100 bytes. > > 1. Does kernel support real-time of such hard requirements ? It depends on the hardware you are using, does your hardware provide enough processing power and lack of harware interruptions (i.e. SMI) to allow this to work properly? > 2. Is it matter if we do the exact bytes send/receive from kernel or userspace, > i.e. is kernel more real-time than userspace ? It depends on your userspace code, people write real-time Java code in userspace just fine. > 3. Is mainline kernel unable to support such requirements and we better use RT > patch such as xemonai ? Why not try it out yourself and see? You have the code and the hardware to test, you don't need us to tell you if this works or not :) good luck! greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
