I think the problem is less about delays at the switch but with latency caused by sharing the Ethernet adapter in the PC with the rest of Linux.
Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -----Original Message----- From: Chris Albertson <[email protected]> Sent: Tuesday, November 16, 2021 3:23 PM To: Enhanced Machine Controller (EMC) <[email protected]> Subject: Re: [Emc-users] USB to Ethernet [EXTERNAL EMAIL] Be sure links are safe. You can work out the delay of a cut-through switch at 100M bits per second. Comes to a handful of microseconds. But does it matter if the delay is always the same? It is variability that matters. We are about talking nanoseconds. That said, I'd not want to use a network that was also being used by a few others to stream a video. But even then, a "managed" switch would fix it for you. Try it and measure the results. My bet is that you can have several LCNC computers and machine tools on the same Eithernet switch. On Tue, Nov 16, 2021 at 10:53 AM johnd <[email protected]> wrote: > I was under the impression that the Mesa required dedicated Ethernet > so UDP packets wouldn't be delayed. JohnSent from my Samsung S10 > -------- Original message --------From: Chris Albertson < > [email protected]> Date: 2021-11-16 9:51 a.m. (GMT-08:00) To: > "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] USB to Ethernet Do you mean that the notebook > PC has Ethernet, but it is in use, and youwant to add a second Ethernet > port? That is not the way to go. Buy anEthernet Switch. Or perhaps > your notebook is already connected to aswitch, then just plug the Mesa card > into the switch. Not only is this acheaper solution it is more efficient > of resource in the PC and Mesa can'tknow the difference.> And the one > Ethernet port on the machine is connected to the MESA board.> I don't > have reliable WiFi so a USB to Ethernet would be one way to get> into it. > Although working with the probe I'd rather be right there with my> > hand on the ESTOP.>> John>>>>> > _______________________________________________> > Emc-users mailing list> [email protected]> > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cto > ddz%40pgrahamdunn.com%7C49837b415f3849edded108d9a93f0ddb%7C5758544c573 > f47cebee96c3e0806fb43%7C0%7C0%7C637726910694386882%7CUnknown%7CTWFpbGZ > sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > D%7C3000&sdata=5Jol3kpXVQhIwHUcsGVsRoEMicVPWEp%2Bd4B%2BFhq741g%3D& > amp;reserved=0>-- Chris AlbertsonRedondo Beach, > California_______________________________________________Emc-users > mailing [email protected]:// > lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ > Emc-users mailing list > [email protected] > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cto > ddz%40pgrahamdunn.com%7C49837b415f3849edded108d9a93f0ddb%7C5758544c573 > f47cebee96c3e0806fb43%7C0%7C0%7C637726910694396877%7CUnknown%7CTWFpbGZ > sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > D%7C3000&sdata=hGmGBZKIPBHEGdqSn8JstT5CzMum6mWfIpfkThOmYCQ%3D& > reserved=0 > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Ctoddz%40pgrahamdunn.com%7C49837b415f3849edded108d9a93f0ddb%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637726910694396877%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=hGmGBZKIPBHEGdqSn8JstT5CzMum6mWfIpfkThOmYCQ%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
