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RE: "Binary XML" proposals
- From: Al Snell <firstname.lastname@example.org>
- To: Gavin Thomas Nicol <email@example.com>
- Date: Fri, 13 Apr 2001 00:40:34 +0100 (BST)
On Thu, 12 Apr 2001, Gavin Thomas Nicol wrote:
> Hmmm. I ran some tests a while ago on JAVA serialization vs.
> serialization to XML, and binary RPC vs XML-RPC. I found reading
> and writing the *binary* JAVA serialization to be around 3x slower
> than writing to XML and reading it back in...
Yeah, Java serialisation is apparently quite slow as a process, I hear.
> conversely, I found XML-RPC to be about 3x slower than binary RPC.
A lot of that might be HTTP overhead :-)
Three-way handshake before you even send the request, the
connection teardown? *retch*!
> At the end of the day, there are *huge* numbers of variables
> that play a part in performance. One thing I've found is that
> the performance of the data structures that the XML encodes
> is a *huge* factor. A naive DOM implementation will take
> ages to construct, regardless of the speed of parsing.
One of the things being considered over in xml-bin now is formats with
indices on, so a DOM implementation can pull stuff from the file as needed
and no sooner. That's nice for documents that are only used for a couple
of limited XPath queries.
Alaric B. Snell
http://www.alaric-snell.com/ http://RFC.net/ http://www.warhead.org.uk/
Any sufficiently advanced technology can be emulated in software