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From: Lynn Wheeler <lynn@garlic.com>
Newsgroups: alt.folklore.computers,comp.os.linux.misc
Subject: Re: The joy of FORTRAN
Date: Fri, 27 Sep 2024 11:13:06 -1000
Organization: Wheeler&Wheeler
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Bytes: 1994


trivia: late 80s univ studying mainframe VTAM implementation LU6.2 had
160k instruction pathlength (and 15 buffer copies) compared to unix/bsd
(4.3 tahoe/reno) TCP had a 5k instruction pathlength (and 5 buffer
copies).

I was on Greg Chesson's XTP TAB and did further optimization with CRC
trailer protocol with outboard XTP LAN chip where CRC was
calculated as the packet flowed through and added/checked it in the
trailor. Also allowed for no buffer copy with scatter/gather (aka doing
packet I/O directly from user memory).

-- 
virtualization experience starting Jan1968, online at home since Mar1970