[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Is there anyone working on a binary version of XML?
Rick Jelliffe wrote: > I have done a few tests on how much compacter forms of XML (e.g. > shortrefs) impact arrival characteristics of document packet-groups > under TCP/IP compared to compression. If your packet size is small, and > you really need to get at data in the first packet (so that you can > piggy back request for auto-linked resources in with the ACK for the > first packet group), then more compact forms of markup may make a > difference. But in general, compression is more effective. (It also > depends on where the bottlenecks are in your data path.) It seems that there are more use-cases which should benefit from having a compressed or a binary format. I made some tests using following XML data. <xmltest> <xi4 value="0" name="VALUE"/> <xi4 value="32768" name="VALUE"/> ... </xmltest> The resulting sizes was: XML 602830 (Standard XML text) FML 131143 (Fast ML, a binary ml that Im working on) XML.gz 75528 (gzip'ed XML text using -9 as compression rate) FML.gz 20886 (gzip'ed Fast ML using -9 as compression rate) The facinating result here is the dramatic reduction in size obtained by first converting to FML and the GZIP the markup stream. > And select your element and attribute > names so that their length is inverse to their frequency, as much as > possible: so use "a:s" not "abracadabra:shazamarama" (you may even make > two versions of your DTD: an authoring one and a transmission one.) One > pof the main bottleneck on many SOHO systems is the modem speed: > reducing the end-to-end character count means fewer packets, and more > data arrives earlier, so more auto-links are followed earlier. On the other hand there is a big drawback using "manual tag compression" which is Readability. /Anders -- /_/_/_/_/_/_/_/_/_/_/_/_/_/_/ / Financial Toolsmiths AB / / Anders W. Tell / /_/_/_/_/_/_/_/_/_/_/_/_/_/_/ xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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