jr@frog.UUCP (John Richardson) (08/15/89)
In article <295@dksoft.UUCP>, dirk@dksoft.UUCP (Dirk Koeppen) writes: > luis@titan.rice.edu (Luis Soltero) writes: > >we hear on the grape vine that wd crads will do 400kbytes/sec transfers on > >a novel net, yet we are only getting about 80kbytes/sec on our unloaded > >386/20 machines running ISC 2.0.1 and ISC's host based tcp/ip. > > We have got the same configuration but the 3COM 501 board. If I use ftp > with our Sony NWS1850 I get amazing 5Kbytes/sec transfer rate. Best of > all is 386/ix to Sony gives 5Kbytes/sec, Sony to 386/ix 53Kbytes/sec !? > Any idea ? > > cu, > dirk@incom.de Yes, A bug in the FTP on one side in which they are using the net stream unbuffered for the transfer. They are doing a getc/putc type thing to a high level FILE *, and are causing a packet for each transfere. By making sure it is block buffered, then the performance goes way up. At least that was the bug in the CMC TCP/IP we ported to our system. JR