What is the fastest XML Parser available for Delphi?

Question

We have reasonably large XML strings which we currently parse using MSXML2

I have just tried using MSXML6 hoping for a speed improvement and have got nothing!

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Answer 1

I know that it's an old question, but people might find it interesting:

I wrote a new XML library for Delphi (OXml): http://www.kluug.net/oxml.php

It features direct XML handling (read+write), SAX parser, DOM and a sequential DOM parser. One of the benefits is that OXml supports Delphi 6-Delphi XE5, FPC/Lazarus and C++Builder on all platforms (Win, MacOSX, Linux, iOS, Android).

OXml DOM is record/pointer based and offers better performance than any other XML library:

The read test returns the time the parser needs to read a custom XML DOM from a file (column "load") and to write node values to a constant dummy function (column "navigate"). The file is encoded in UTF-8 and it's size is about 5,6 MB.

The write test returns the time the parser needs to create a DOM (column "create") and write this DOM to a file (column "save"). The file is encoded in UTF-8 and it's size is about 11 MB.

+ The poor OmniXML (original) writing performance was the result of the fact that OmniXML didn't use buffering for writing. Thus writing to a TFileStream was very slow. I updated OmniXML and added buffering support. You can get the latest OmniXML code from the SVN.