<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:10pt"><P>Stefan,</P>
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<P>Just confirming you are talking about storage space, not link spped, like Lachlan's previous msg.</P>
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<P>This is the type of characterization we would like to see documented - and perhaps reflected in a document...</P>
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<P>Dirceu</P>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">----- Original Message ----<BR>From: Stefan Hirschmann <krasnoj@gmx.at><BR>To: iccrg@cs.ucl.ac.uk<BR>Sent: Tuesday, April 8, 2008 12:55:20 PM<BR>Subject: Re: [Iccrg] SSDT Scope - summary<BR><BR>Lachlan Andrew wrote:<BR>Hi!<BR>> But when we first start, we don't know if we're talking to a 300bps<BR>> mote or a 100GbE supercomputer. After a single timeout, we will<BR>> generally (???) be using a "similar" network.<BR><BR>In times of QoS this assumption may be very wrong. E.g. You have two <BR>wires to the internet. One 1MB and one 100MB, but for the 100MB only <BR>HTTP is allowed all other protocols have to use the 1MB link. If youre <BR>first connection is an HTTP one, then the 1MB link will be overshot, the <BR>other way round you'll have to wait for a long time to satisfy the 100MB <BR>if you increase just linear.<BR><BR>The first mentioned problem,
with 1MB link get 100 MB data could be <BR>solved in one RTT, but in this case 99MB data get dropped. This would be <BR>an overshot of the factor 100 and much worser than slowstart.<BR><BR>Cheers Stefan<BR><BR>_______________________________________________<BR>Iccrg mailing list<BR><A href="mailto:Iccrg@cs.ucl.ac.uk" ymailto="mailto:Iccrg@cs.ucl.ac.uk">Iccrg@cs.ucl.ac.uk</A><BR><A href="http://oakham.cs.ucl.ac.uk/mailman/listinfo/iccrg" target=_blank>http://oakham.cs.ucl.ac.uk/mailman/listinfo/iccrg</A><BR></DIV><BR></DIV></div><br>
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