neil@yc.estec.nl (Neil Dixon) (11/21/89)
We have a Macintosh EtherTalk Interface Card installed in a Mac II. When using the FTP in NCSA Telnet we only seem to get transfer rates of approx 4Kb/sec when talking to other machines on our network. File transfer between all other machines on our network is much faster. Is this normal, or should I start looking for problems? -- Neil Dixon <neil@yc.estec.nl> UUCP:...!mcvax!esatst!neil, BITNET: NDIXON@ESTEC Thermal Control & Life Support Division (YC) European Space Research and Technology Centre (ESTEC), Noordwijk, The Netherlands.
bandy@capmkt.COM (Shift Happens) (11/22/89)
neil@yc.estec.nl (Neil Dixon) writes that his Macintosh EtherTalk interface card in his Mac II is only giving him 4kb/sec transsfer rates with NCSA Telnet. He wonders if this is normal. Unfortunately, it's quite normal. In addition to your Macintosh being somewhat slow [no DMA], the EtherTalk card [as of last May, which is the last time I complained to anyone at Apple about it] doesn't support on-board buffering, even though they have 16kbytes worth of packet buffers.
des7f@ra.cs.Virginia.EDU (David Sappington) (11/22/89)
neil@yc.estec.nl (Neil Dixon) states: > We have a Macintosh EtherTalk Interface Card installed in a Mac II. > When using the FTP in NCSA Telnet we only seem to get transfer rates > of approx 4Kb/sec when talking to other machines on our network. File Using a Max IIx with Apple's EtherTalk card running NCSA Telnet 2.3 with the MacTCP driver I get anywhere from 30-70 Kbytes/sec when ftping from Sun 3/60s. The upper end occurs when the sun and mac share the same subnet while the lower end prevails when the machines are routed across the university's broadband network. The 4Kb/sec is more typical of a Mac communicating across LocalTalk -- I seem to recall a typical xfer speed of 2-8 Kb/sec under such conditions. There are currently two versions of NCSA Telnet (not counting BYU's additions): one that uses MacTCP and one that uses an older encapsulation scheme (a.k.a NCSA driver). I doubt that the latter will be as fast across EtherNet. Of course using the NCSA driver is free while MacTCP is sold through APDA. You can obtain the latest version(s) of NCSA Telnet via anonymous ftp from zaphod.ncsa.uiuc.edu (128.174.20.50). Dave Sappington Inst. for Parallel Computation University of Virginia des7f@virginia.edu des7f@virginia.bitnet
markw@kinetics.com (Mark Wittenberg) (11/23/89)
From article <375@capmkt.COM>, by bandy@capmkt.COM (Shift Happens): > neil@yc.estec.nl (Neil Dixon) writes that his Macintosh EtherTalk interface > card in his Mac II is only giving him 4kb/sec transsfer rates with NCSA > Telnet. He wonders if this is normal. > > Unfortunately, it's quite normal. In addition to your Macintosh being > somewhat slow [no DMA], the EtherTalk card [as of last May, which is the > last time I complained to anyone at Apple about it] doesn't support on-board > buffering, even though they have 16kbytes worth of packet buffers. Perhaps normal, but not (to me) acceptable. Our (Novell/Excelan/Kinetics) telnet/ftp program (LAN Workplace for the Mac) running over our Ethernet board (EtherPort II) in binary mode gets 50KB to 95KB per second (bytes, not bits) on a MacII with a fast disk; you should see at least 15KB to 25KB on any platform. I'd like to claim that our board is just that much faster than Apple's, but I don't think that it's true (we don't have DMA either ...). I think that it's your NCSA Telnet; that's about the throughput I got when I first tested it. To get better throughput: 1. Get the latest version. 2. (Even if you don't get the latest version) Tune the settable parameters in your config file; in particular, set the buffer sizes bigger (try 4K). 3. Consider buying a supported commercial product. I know that both ours and Intercon's (the commercial version of NCSA) are good; there are probably others too (Ungermann-Bass?) Mark Wittenberg Voice: (415) 975-4512 Kinetics/Excelan/Novell, Inc. Internet: markw@kinetics.com 1340 Treat Blvd. Suite 500 UUCP: ucbvax!mtxinu!kinetics!markw Walnut Creek, CA 94596 AppleLink: D0927
xdaa374@ut-emx.UUCP (William T. Douglass) (11/24/89)
In article <375@capmkt.COM> bandy@capmkt.COM (Shift Happens) writes: >neil@yc.estec.nl (Neil Dixon) writes that his Macintosh EtherTalk interface >card in his Mac II is only giving him 4kb/sec transsfer rates with NCSA >Telnet. He wonders if this is normal. > >Unfortunately, it's quite normal. In addition to your Macintosh being Actually, I wouldn't consider that normal at all. At least in our situation (Mac II w/ SE/30 AppleShare server) we get closer to 65kb/sec transfer(1.3MB file copied in 20 sec.) Many things can affect this, of course. The NCSA software may be a bottleneck, as could be the host system. The EtherTalk board is not the problem. -- Bill Douglass, TCADA "I dreamed I was to take a test, in a Dairy Queen, on another planet." L. Anderson
rfl@oddjob.uchicago.edu (Bob Loewenstein) (11/26/89)
Using TOPS and a Mac Ethernet card, we transfer 1.4Mbyte files within a mac program within 10 seconds.