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xom-interest - Re: [XOM-interest] Performance of Java XPath engines

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Subject: XOM API for Processing XML with Java

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  • From: shirasu hiroyuki <hirsh AT s9.dion.ne.jp>
  • To: steve.loughran AT gmail.com
  • Cc: xom-interest AT lists.ibiblio.org
  • Subject: Re: [XOM-interest] Performance of Java XPath engines
  • Date: Fri, 21 Jan 2005 16:52:32 +0900 (JST)

From: Steve Loughran <steve.loughran AT gmail.com>
Subject: Re: [XOM-interest] Performance of Java XPath engines
Date: Thu, 20 Jan 2005 12:47:57 +0000

<snip/>

> Another interesting question is the impace of caching. If you have an
> XML file big enough that the parsed graph is bigger than $L2 cache,
> then you have to hit main memory to navigate around it. As Java (and
> .NET) lack anyway to put prefetch hints in the code, the only way to
> differentiate your navigation performance is by using algorithms
> optimised for different memory speeds. I dont know if any
> implementations do, but big file testing is the way to see.
>
> What were the file sizes of the tests?


I used one file. Its size was 230k.
I apologize for having less knowledge of $L2 cache and so on.

Thanks,
--
shirasu hiroyuki(hirsh AT s9.dion.ne.jp)




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