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Article #1418Re: eine Ping Frage
From: Michael Shavit
Date: Mon, 03 Feb 1997 00:00
Date: Mon, 03 Feb 1997 00:00
42 lines
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2058 bytes
In article <5cva0v$2mp$1@vulcan.alphanet.ch>, schaefer@vulcan.alphanet.ch says... > >In article <5ctjua$jq5@usenet78.supernews.com>, > webmaster@arselectronica.com (Michael Shavit) writes: > >> sich ja auch nicht mit Zunahme der Lichtstaerke (Lux). Nur hier kommt der Clou > >ping_delay == time to transmit the packet > + time to transmit the answer > + computing/relaying time > >So if you double your line's speed, you should see a quite good >increase for big packets. For small packets, or if the bundling >allocation algorithm is based on a treshold (ie it does not send one >byte here, one byte here, but instead blocks, which are probably >easier to handle), small packets will be sent slowly, ie probably one >one line. If someone knows the ``partitionning'' algorithm for >bundling, it would be nice to tell it. > >You should really use UNIX ``bing'' (available on ftp.ibp.fr) >which uses different packet sizes and on that basis evaluate >the bandwidth between two points. > >Or, if you don't have luck (ie !UNIX), try to do some pings with >bigger packet sizes (ping -c SIZE) and/or some FTPs. > >Asymptotically, for big packets, the rate should be doubled >with ISDN bundling. > >PS: Don't forget that WWW sessions (which seem to be quite popular > nowadays) use TCP sessions (opened and closed usually for each remote > object they download; HTTP 2.0 excluded), which means THREE (small) > packets just to open the session (-> <- ->). > > Thanks alot!!! michael
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f8cd8,b0f23fb30e704940 X-Google-Attributes: gidf8cd8,public From: webmaster@arselectronica.com (Michael Shavit) Subject: Re: eine Ping Frage Date: 1997/02/03 Message-ID: <5d4dj9$p00@usenet78.supernews.com> X-Deja-AN: 214092790 references: <5ctjua$jq5@usenet78.supernews.com> <5cva0v$2mp$1@vulcan.alphanet.ch> content-type: Text/Plain; charset=US-ASCII organization: 207.126.101.78 mime-version: 1.0 newsgroups: ch.network