Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!aeras!bud!kwang
From: kw...@bud.UUCP (Kwang Sung)
Newsgroups: comp.protocols.tcp-ip
Subject: Performance
Message-ID: <185@bud.UUCP>
Date: 21 Nov 88 17:25:13 GMT
Reply-To: kw...@bud.UUCP (Kwang Sung)
Organization: Arete Systems, Inc. San Jose, CA.
Lines: 19
References:

Recently, I improved "ftp" in one of our products which is 4.2BSD based.
When I typed ftp> bin
             ftp> get /syst /dev/null, 
I had:
             351465 bytes received in 1 second ( 3.4 e + 02 Kbytes/sec )

I didn't use Van Jacobson's Algorithm.

Is there anybody has better "ftp" performance than mine ???

Bye Bye

Kwang Sung
Sr. Software Engineer
ARIX Corp
408-922-1822
408-251-5040(H)
UUCP: ...!sun!aeras!smaug!kwang

Path: utzoo!attcan!uunet!eplrx7!udel!princeton!njin!rutgers!mailrus!ames!pasteur!ucbvax!HELIOS.EE.LBL.GOV!van
From: v...@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: dae...@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 KB/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