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Re: Eclipse: the new Emacs? (and the XML story)

• To: xml-dev@l...
• Subject: Re: Eclipse: the new Emacs? (and the XML story)
• From: Mark Schmeets <mark@c...>
• Date: Tue, 06 Apr 2004 09:33:58 -0400
• In-reply-to: <20040406124158.GG15053@w...>
• References: <40716EFF.4050405@a...> <407182A3.5090502@o...> <40729C26.1080806@c...> <20040406124158.GG15053@w...>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031013 Thunderbird/0.3

I think you are absolutely correct, the tag to text ratio definitely
has an impact. I wrote a very simplistic dom implementation (in C, 
loaded by expat) and tested it
with a machine generated file with a lot of empty tags. This had a big 
footprint relative
to a file that is mostly text. Haven't tried that in Java, but it might 
be fun.

Mark

Liam Quin wrote:

>On Tue, Apr 06, 2004 at 08:01:42AM -0400, Mark Schmeets wrote:
>  
>
>>I have not tried xmlbuddy, but all of the xml editors I have tried, 
>>including oXygen ( and the Win32 ones XMLSpy, XMLNotepad, etc. ) exhibit 
>>this behavior. Using RAM at 10 to 12 times the size of the document on 
>>disk. I have always assumed it was because the were using DOM's 
>>internally, and that the
>>DOM implementations were memory hogs. Any one have any wisdom to share here?
>>    
>>
>
>Have you tested how the density of tags to text affects this?
>
>I remember that with SoftQuad Author/Editor (in SGML days), the
>overhead per element was significant, but text averaged not so
>much more than disk overhead.  Systems using 16-bit characters
>internally to represent Unicode text will do slightly worse than
>using twice as much memory as disk space for text that's mostly
>US ASCII.
>
>For Java-based software, the JVM you use may also make a difference,
>although my experience (mostly on Linux) has been that the non-Sun JVMs 
>don't actually run much software I want to run.
>
>Liam
>
>  
>

• References:
  • Eclipse: the new Emacs? (and the XML story)
    • From: David Megginson <dmeggin@a...>
  • Re: Eclipse: the new Emacs? (and the XML story)
    • From: Bob Foster <bob@o...>
  • Re: Eclipse: the new Emacs? (and the XML story)
    • From: Mark Schmeets <mark@c...>
  • Re: Eclipse: the new Emacs? (and the XML story)
    • From: Liam Quin <liam@w...>

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