dag@chinet.UUCP (Daniel A. Glasser) (02/24/88)
I have a Zilog Zeus System 8000 running Unix system III with 2 megabytes of memory and an ICP8/02 intelligent communications board running the ICP kernal ITH V3.0. I have noticed a serious drop in terminal I/O real-throughput when using lines connected to this board with kermit vs. using a line from the initial 8 on the system board. The ICP serial lines are DMA... I would think that the ICP lines would be more efficient. I am using the lines to talk to a 2400 baud modem. Would this be caused by the DMA overhead of single character I/O as performed by kermit? I have a rather primitive version of kermit (a modified version of the portable kermit kernal in the 5th edition of the Kermit Protocol Manual.) If this is so, would running UUCP over one of the ICP lines be a mistake, or does UUCP use block buffered input/output? Any suggestions and/or sources for a better kermit (C-Kermit maybe?) for this system will be appreciated. -- Nobody at the place where I work Daniel A. Glasser knows anything about my opinions ...!ihnp4!chinet!dag my postings, or me for that matter! ...!ihnp4!mwc!dag ...!ihnp4!mwc!gorgon!dag One of those things that goes "BUMP!!! (ouch!)" in the night.