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Re: XML Performance in a Transacation

• To: Michael Kay <mike@s...>
• Subject: Re: XML Performance in a Transacation
• From: Rick Marshall <rjm@z...>
• Date: Fri, 24 Mar 2006 09:31:30 +1100
• Cc: "'Rick Jelliffe'" <rjelliffe@a...>, xml-dev@l...
• In-reply-to: <200603231428.k2NESr1s003003@z...>
• Organization: Zenucom Pty Ltd
• References: <200603231428.k2NESr1s003003@z...>
• User-agent: Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929)

my first impressions are that it's an algorithm problem, not a what it's 
coded in problem.

if the algorithm is o(n2) then you can't really escape the problem, even 
with hardware.

as it is a very real problem for me (and therefore my customers) this is 
something i'll be tackling, probably starting in a few days.

i'll post the results in due course.

rick

Michael Kay wrote:

>>My expectation is that XML parsing can be significantly sped up with ...
>>    
>>
>
>I think that UTF-8 decoding is often the bottleneck and the obvious way to
>speed that up is to write the whole thing in assembler. I suspect the only
>way of getting a significant improvement (i.e. more than a doubling) in
>parser speed is to get closer to the hardware. I'm surprised no-one has done
>it. Perhaps no-one knows how to write assembler any more (or perhaps, like
>me, they just don't enjoy it).
>
>Michael Kay
>http://www.saxonica.com/
>
>
>
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