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Re: Making w3.org much faster

From: Ian Jacobs <ij@w3.org>
Date: Wed, 3 Aug 2011 06:27:23 -0500
Cc: <site-comments@w3.org>
Message-Id: <F3869D94-0045-4AC7-8DF8-00E116B971CD@w3.org>
To: "FinanzNachrichten.de, Markus Meister" <markus.meister@finanznachrichten.de>

On 3 Aug 2011, at 2:48 AM, FinanzNachrichten.de, Markus Meister wrote:

> Dear Ian,
> 
> When I visit the homepage, there are a lot of (unnecessary) http-requests.
> 
> Firebug currently shows me 35 requests of which 4 are tiny CSS files.
> It would make sense to have 1 big CSS file instead. This would save 3 requests. From my experience 1 request with 1 byte costs at
> least the same load time as additional 10 kB in an file (using ADSL - depending on the bandwidth it can even be worse).

Hi Markus,

Thank you for the comments. We have considered "one big css" but prefer to keep them separate to better address the diversity of mobile devices.

> 
> There are 28 graphic files.
> I am sure that it would be possible to put at least 3/4 of them into a CSS sprite file, e.g. the logo, the icons, etc.

Yes, we could (and should) do that.

> 
> Here you can see what happens during loading of the homepage on the First View and a Repeated View:
> http://www.webpagetest.org/result/110803_1F_17GF4/
> 
> With the CSS files put together in 1 file and the often used graphics put together in 1 CSS sprite file, the number of http-requests
> should be around 10 and the load time will be down from nearly 2 seconds to 1 second.

Thanks for the detailed investigation!

> 
> In the Repeat View you can see many 304s as there is a caching error that should be fixed as well.
> This would then bring down the second visit to 1-3 http-requests and would make the page ultra-fast!!
> 
> Further to that convenience for users, the servers would have less work as there are less http-requests which may lead to cost
> savings.

I appreciate the help and expect we will devote some time to the CSS sprite work (when we can prioritize it).

Ian

> 
> Best regards,
> 
> FINANZNACHRICHTEN.DE
> Markus Meister
> 
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--
Ian Jacobs (ij@w3.org)    http://www.w3.org/People/Jacobs/
Tel:                                      +1 718 260 9447
Received on Wednesday, 3 August 2011 11:27:25 GMT

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