Re: [Etherboot-developers] TFTP speed

[James N. <jn...@me...>]

Thanks Eric and Ken for the responses so far.  We are using a 3COM LAN
Modem.   The ping times are using around 210ms.   It is taking about 7
minutes to boot up (using the world's smallest 2.4 kernel!).  Using the LAN
Modem is about the slowest possible way, we know -- but it does seem to be a
working solution.   Of course "working" for some would not be using a 33.6
link.   We will probably move to another form of connection, but at the
present time 33.6 is all we have available.      We will look into
installing a disk drive in a workstation.   I'm just glad we don't need to
run X over that 33.6 link.

Thanks,

James


----- Original Message -----
From: "Ken Yap" <ke...@us...>
To: "Etherboot developers list" <eth...@li...>
Sent: Thursday, May 30, 2002 9:20 AM
Subject: Re: [Etherboot-developers] TFTP speed


> >Hi. Not sure if this is the correct place of this post, forgive me if it
is
> >not.    It seems that the TFTP speed downloading a kernel from an
Etherboot
> >workstation using a standard 33.6 modem is very slow.  I know that
33.6kbps
> >is nothing like 10 or 100-base-T, but we can see the send/recv LEDs blink
>
> You're a brave man to do TFTP across a 33.6kb link.  That's roughly 300
> times slower than 10 Mb. How far is the client from the server network
> wise, i.e. what sort of delay numbers do you get when you do a ping?
> TFTP was never intended for downloading across thin links, the UDP
> protocol is stop and wait. TCP gets its speed from buffering and
> streaming. You really should situate a server near the client.
>
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