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- Path: sparky!uunet!mcsun!Germany.EU.net!rsp!tom
- From: tom@rsp.UUCP (Thomas Ruf)
- Newsgroups: comp.protocols.nfs
- Subject: Re: Sun <=> PC Transfer Rate (Summary)
- Message-ID: <1072@rsp.UUCP>
- Date: 10 Sep 92 23:52:57 GMT
- References: <1992Sep4.173931.24033@pixel.kodak.com> <karl.23.716089551@empirical.com> <BuDFv1.3n6@watserv1.uwaterloo.ca>
- Organization: RSP Datensysteme, W-Germany
- Lines: 19
-
- eengelke@sail.uwaterloo.ca (Erick Engelke) writes:
-
- >>I've gotten as high as 5megabits/second using a 50Mhz 486DX box with a 16
- >>bit WD board using the same software and packet driver.
- >That is about the limit of the current ISA ethernet hardware and packet
- >drivers. 3Com's new (unreleased) cards should up that by 25% to 50%.
- >On a different ISA network card we get 850 KB/s, but you really start
- >hitting the hardware bus limitations.
- Can't agree here: a good Ethernet card on ISA (e.g. our LANCE based cards)
- can saturate an Ethernet and of course also receive at the same rate.
- If you assume that ISA has a bandwidth of
- about 4MB/s, the CPU has still about 70% of time available for the
- packet driver and TCP/IP protocol processing. So the limitation
- is probably not the bus but the cpu.
-
- Thomas
- --
- Thomas Ruf tom@rsp.de Schneider & Koch GmbH
- {uunet,mcvax}!unido!rsp!tom Germany
-