• From: Michael Kay <mike@s...>
• To: Roger L Costello <costello@m...>
• Date: Wed, 22 Jun 2022 11:50:20 +0100

Yes, copying of character strings (and indeeed, XML subtrees) typically dominates XML parser and XSLT performance.

See for example my 2021 Balisage paper  on Zeno-strings as a take on how to improve matters.

Michael Kay
Saxonica

> On 22 Jun 2022, at 11:05, Roger L Costello <costello@m...> wrote:
> 
> Hi Folks,
> 
> Minimizing the movement of characters is very relevant to people implementing networking software and also those doing hardware accelerators and their device drivers.
> 
> These people spend a lot of time worrying about zero-copy abstractions, i.e. how to avoid moving data around. The less the data moves, the faster throughput they get with less energy usage and usually with less hardware too.
> 
> Are there use cases where it is important to minimize the movement of characters in XML documents?
> 
> /Roger
> 
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• References:
  • Zero-copy abstractions
    • From: Roger L Costello <costello@m...>