🚀 go-pugleaf

bill@connection.prospect.com (Bill Poitras) writes:

> In article <1991Aug29.041708.29784@unislc.uucp> martin@unislc.UUCP (Martin Cryer,D1Z01,5754) writes:
> >I think you are asking too much of a timesharing O/S even with an EISA
> >PC to get sustained 6Mbytes/s. If you only want it for bursts, you
> >may have better luck.
> 
> Are you kidding?  I have seen 100Mbytes/s when ftping a file to a PS/2
> running AIX with a ESDI controller and 16 bit ethernet controller.  I can
> consitently get 20Mbytes/s.  Hell, I can get 11Mbytes/s sometimes to a PC
> running DOS.  This is a ISA machine with a 16bit RLL controller.  I don't
> see your problem.

Alleluiah! Alleluiah! He got a dispensation from Shannon himself! He can
shove thru an 800KB/s Ethernet and a 1MB/s ESDI device ten, twenty, one
hundred times their maximum rated capacity! He is one of the Anointed! The
last time we saw anything similar it involved bread and fish!

    Amazing facts: the maximum bandwidth of the MCA bus when running at full
    tilt in 32 bit mode is under 40MB/s; to have 100MB/s of transfer rate
    *to memory* would require dozens of megabytes of requires hundreds of MB
    of 4-way interleaved 20-30ns RAM; to be able to consistently get 20MB/s
    on a TCP/IP link would require, assuming an overhead of 4 instructions
    per byte passed thru (wildly optimistic, just consider checksumming), a
    80Mhz CPU.

:-) :-) :-) :-) :-) :-) :-) :-)
-- 
Piercarlo Grandi                   | ARPA: pcg%uk.ac.aber@nsfnet-relay.ac.uk
Dept of CS, UCW Aberystwyth        | UUCP: ...!mcsun!ukc!aber-cs!pcg
Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@aber.ac.uk