Article View: comp.sys.sun
Article #7313Re: FTP gives weird trasfer rates on SunOS 4.1
From: Art Berggreen
Date: Tue, 02 Apr 1991 15:00
Date: Tue, 02 Apr 1991 15:00
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In article <2034@brchh104.bnr.ca> rd@chorus.fr writes: >There's a minor bug in SunOS 4.1's ftp command that cause it to print >crasy transfer rates. For instance, this is the result from a FTP transfer >between two Sparcs running SunOS4.1 and connected by a 9600 bauds leased >line: >9931 bytes sent in 1e-06 seconds (9.7e+06 Kbytes/s) You are probably only seeing this on short files. I believe this is due to the fact that FTP calculates time to when the last write completes, NOT when the data is completely delivered. Thus, when the file is less than the TCP window, the time is just enough to copy it to the kernel.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request From: art@opal.acc.com (Art Berggreen) Newsgroups: comp.sys.sun Subject: Re: FTP gives weird trasfer rates on SunOS 4.1 Keywords: Networks Message-ID: <2244@brchh104.bnr.ca> Date: 2 Apr 91 15:00:00 GMT Sender: news@brchh104.bnr.ca Organization: Sun-Spots Lines: 12 Approved: Sun-Spots@rice.edu X-Original-Date: Mon, 1 Apr 91 18:35:44 GMT X-Refs: Original: v10n59 X-Sun-Spots-Digest: Volume 10, Issue 66, message 6 X-Note: Submissions: sun-spots@rice.edu, Admin: sun-spots-request@rice.edu