egisin@orchid.UUCP (11/13/87)
When I rcp a large file between two idle BSD machines (785 or sun 3/50), there is no idle time. Read or write never blocks. The large window size (4K) is an important factor here. Also, if you just layer a socket library on a low-level (upcall) interface, you probably won't get as good performance as a tcp/ip designed with a socket interface from the beginning.
ddp+@ANDREW.CMU.EDU (Drew Daniel Perkins) (11/16/87)
Eric, Even BSD has an upcall mechanism underneath the socket level. Drew