From uunet!HELIOS.EE.LBL.GOV!van Wed Nov 23 06:21:18 1988
Path: hsi!uunet!eplrx7!udel!princeton!njin!rutgers!mailrus!ames!pasteur!ucbvax!HELIOS.EE.LBL.GOV!van
>From: van@HELIOS.EE.LBL.GOV (Van Jacobson)
Newsgroups: comp.protocols.tcp-ip
Subject: re: Performance
Message-ID: <8811231121.AA19744@helios.ee.lbl.gov>
Date: 23 Nov 88 11:21:18 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 39

> Recently, I improved "ftp" in one of our products which is 4.2BSD based.
> I had 351465 bytes received in 1 second ( 3.4 e + 02 Kbytes/sec )
> ...
> Is there anybody has better "ftp" performance than mine ???

It would be interesting to see what performance you would get
with a good tcp.  I think Dave Borman of Cray Research holds the
current ftp speed record:  He routinely gets 30 Megabytes/sec
(of course, some of us think using two Cray-IIs gives him an
unfair competitive advantage).  If you're using more
conventional hardware, 340 Mb/s still isn't spectacular.  Here's
a typescript between two of our Sun 3/60s across an ethernet.
Both machines are running stock 4.3bsd-tahoe ftp & ftpd with
Mike Karels' and my tcp & kernel hacks:

    Script started on Wed Nov 23 02:40:44 1988
    [vs 1]% ftp yak
    Connected to yak.ee.lbl.gov.
    220 yak FTP server (Version 4.27 Sat Nov 5 02:20:42 PST 1988) ready.
    Name (yak:van):
    331 Password required for van.
    Password:
    230 User van logged in.
    ftp> bin
    200 Type set to I.
    ftp> get /usr/lib/libcore.a /dev/null
    200 PORT command okay.
    150 Opening data connection for /usr/lib/libcore.a (669336 bytes).
    226 Transfer complete.
    669336 bytes received in 0.82 seconds (8e+02 Kbytes/s)
    ftp> get /usr/lib/libcore.a /dev/null
    200 PORT command okay.
    150 Opening data connection for /usr/lib/libcore.a (669336 bytes).
    226 Transfer complete.
    669336 bytes received in 0.82 seconds (8e+02 Kbytes/s)
    ftp> bye
    221 Goodbye.
    [vs 2]% exit
    script done on Wed Nov 23 02:41:23 1988