From: utzoo!decvax!cca!mo@LBL-UNIX@sri-unix Newsgroups: net.unix-wizards Title: Re: Looking for Unix driver for Interlan Ethernet interface Article-I.D.: sri-unix.3198 Posted: Fri Sep 10 00:43:18 1982 Received: Fri Sep 10 07:00:16 1982 From: mo at LBL-UNIX (Mike O'Dell [system]) Date: 8 Sep 1982 09:35:08-PDT Ahem! The tests we have done involved running 4.1a to 4.1a between 780's over the pronet ring. We are seeing about 100 kbytes/sec user-process-to-user-process before the Vaxen burn up. There is no evidence of any wire-limiting going on. IP/TCP is a pig and there ain't no way around it, and the 4.1a TCP is probably the fastest around. As soon as Sam gets Delta-T working, I will try it and see what happens. Should be able to go a lot faster. In the near future, we will be connecting a logic analyzer to the hardware and be taking some detailed "this many microseconds to do that" kind of measurements. We do know that because the interface is only single-buffered on the input side, it can't do back-to-back packets, but that is a small loss compared to the braindamage of existing Ethernet controllers. Hope this information, what there is of it, is useful. -Mike