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List:       xml-dev
Subject:    Re: [xml-dev] Do long element names impact performance?
From:       Michael Kay <mike () saxonica ! com>
Date:       2015-10-15 14:03:48
Message-ID: 010F95E5-A445-43ED-BF69-EA2299861A8B () saxonica ! com
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Are you asking us to do the measurements for you, or are you asking us to guess?

Michael Kay
Saxonica

> On 15 Oct 2015, at 14:43, Costello, Roger L. <costello@mitre.org> wrote:
> 
> Hi Folks,
> 
> Is the following true or false? 
> 
> 	XML developers who fail to grasp the distinction between reading and evaluating 
> 	an XML instance document may have a good model of the structure of XML, 
> 	but they usually have a terrible model of the efficiency of processing XML. One 
> 	XML developer used only one-letter element names, because he felt that it would 
> 	be faster for the computer to look up one-letter elements than a multi-letter name. 
> 	While it may be true that shorter names can save a microsecond at read time, this 
> 	makes no difference at all at evaluation time. Every element, regardless of its name, 
> 	is just a memory location, and the time to access the location does not depend on the 
> 	name of the element.
> 
> /Roger
> 
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