Hi.

When fetching contents from w3.org, the latency experienced is not really any problem.

Except when trying to fetch some HTML DTD. This is really slow, and sometimes the time-out limit in a browser can be surpassed, which means that the browser regards the server site as not responding.

To better understand these symptoms: ...

*Question*:
- is there a special w3 server dedicated to common DTDs, and this server has recently become overloaded?
 - is it a load-balancing issue?
 - or is it the effect of some platform resource usage policy?

It is interesting that DTD should not be any serious bottleneck. They have a fairly long valid duration -- e.g. for html4/loose.dtd a header says "Expires: Tue, 24 May 2011 15:21:41 GMT".

The trigger for this question was when a user called the Swedish Office to ask about "why Internet Explorer could not deliver a page (from somewhere.com) because the loose.dtd could not be found". I did look around, and that was when I became aware of the dtd delivery delays.

Regards,

/olle

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Olle Olsson   [email protected]   Tel: +46 8 633 15 19  Fax: +46 8 751 72 30
        [Svenska W3C-kontoret: [email protected]]
SICS [Swedish Institute of Computer Science]
Box 1263
SE - 164 29 Kista
Sweden
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