W3C home > Mailing lists > Public > site-comments@w3.org > February 2011

Re: Slow DTD delivery

From: Ian Jacobs <ij@w3.org>
Date: Wed, 23 Feb 2011 10:22:28 -0600
To: Olle Olsson <olleo@sics.se>
Message-Id: <5E0C5CF0-DBE3-4B0D-B05D-72718BA0DB77@w3.org>
Cc: site-comments@w3.org

On 23 Feb 2011, at 10:04 AM, Olle Olsson wrote:

> 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.

Hi Olle,

You might have a look at our FAQ about this:
  http://www.w3.org/Help/Webmaster#block

Ian

>
> Regards,
>
> /olle
>
> -- 
> ------------------------------------------------------------------
> Olle Olsson   olleo@sics.se   Tel: +46 8 633 15 19  Fax: +46 8 751  
> 72 30
>        [Svenska W3C-kontoret: olleo@w3.org]
> SICS [Swedish Institute of Computer Science]
> Box 1263
> SE - 164 29 Kista
> Sweden
> ------------------------------------------------------------------
>
>
>
>

--
Ian Jacobs (ij@w3.org)    http://www.w3.org/People/Jacobs/
Tel:                                      +1 718 260 9447
Received on Wednesday, 23 February 2011 16:22:31 GMT

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