cmorgan@ooc.uva.nl (Chris Morgan/RIKS) (10/03/90)
Hi all, I imagine most experienced NCSA Telnet users know this already but I thought this might be useful to people, like me, who are using it for the first time... I posted a question to this group a few days ago asking why telnet FTP data transfers between a Mac and a Sun were running at only about 3Kb/s. After downloading some excelent documentation from an FTP site a few days ago, I found a section entitled "Performance Tuning" which suggested a few simple edits to the config.tel file which have really helped... NCSA telnet over AppleTalk rwin=512, mtu=512, maxseg=512 # the default settings NCSA telnet over local network running EtherNet rwin=4096, mtu=1024, maxseg=1024 NCSA telnet for use with Arpanet and with EtherNet rwin=4096, mtu=512, maxseg=512 When I modified my config.tel file from the default settings to the EtherNet settings (2nd in the list above), I saw a speed increase of about 500 % !!! The test was to FTP the vmunix.gen file (1,197,817 Bytes) from my Sun 3/260 fileserver to my MacIIcx. With the default settings the transfer took 240s and with the modified settings the transfer took 45s. Quite a difference. I hope this is useful to someone, I appologize if this is old news. I would like to hear from people who benefit from this info and from people who perhaps know more about how to beaf-up the performance of NCSA telnet. Best regards to all, Chris Morgan cmorgan@ooc.uva.nl or morgan@riksnl.uucp