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Article #1411Re: eine Ping Frage
From: Marc SCHAEFER
Date: Sat, 01 Feb 1997 00:00
Date: Sat, 01 Feb 1997 00:00
32 lines
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1835 bytes
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 (-> <- ->).
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f8cd8,b0f23fb30e704940 X-Google-Attributes: gidf8cd8,public From: schaefer@vulcan.alphanet.ch (Marc SCHAEFER) Subject: Re: eine Ping Frage Date: 1997/02/01 Message-ID: <5cva0v$2mp$1@vulcan.alphanet.ch> X-Deja-AN: 213726260 references: <5ctjua$jq5@usenet78.supernews.com> organization: ALPHANET NF - Research and information - Not for profit newsgroups: ch.network