thanks ... this is the same that i know .... but my last study about motherboard was wiyh Z80 .... so my knowelge about is not updated.
regards Il giorno dom 31 mar 2019 alle ore 18:43 theman whosoldtheworld < bleachk...@gmail.com> ha scritto: > > > Il giorno sab 30 mar 2019 alle ore 04:26 Przemek Klosowski < > przemek.klosow...@gmail.com> ha scritto: > >> On Thu, Mar 28, 2019 at 2:13 PM theman whosoldtheworld < >> bleachk...@gmail.com> >> wrote: >> >> > >> > PCW in the forum normally suggest desktop motherboard ... Is it just a >> > matter of Platform Controller Hub that prevented the rt-preemt kernels >> > from having good performances? >> > >> I always thought the realtime latencies are mostly caused by the black >> magic of the SMB---the system management firmware which is allowed to take >> over completely from the main CPU. Somehow this is connected to the video >> hardware: even though video normally does not have its own non-preemptible >> firmware. The way I understand it, the SMB code ends up calling the video >> callbacks which are poorly designed and take excessively long. >> >> Since SMB is a black box subsystem, there's no way to predict its >> latencies. My understanding is that there is only one sure way to find >> out: run latency tests, like LinuxCNC is doing. >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
