| <!-- |
| 4XPath Performance test from "Olivier Deckmyn" <odeckmyn.list@teaser.fr>, with import and filename updates |
| |
| Subject: [4suite] 4XPath performance ? |
| Date: Thu, 8 Jun 2000 16:30:21 +0200 |
| From: "Olivier Deckmyn" <odeckmyn.list@teaser.fr> |
| To: "4Suite list" <4suite@dollar.fourthought.com> |
| |
| I am playing and testing 4XPath.... |
| And I am a little afraid of the results I see... |
| The machine is a Dell Server (2400) with a single PIII-750 and 256MB RAM, |
| USCSI disks (10K RPM), running FreeBSD4. |
| |
| There is a lot of memory, cpu is not used for anything else than the test... |
| |
| With a 100KB xml file, I have applied the attached test1.py |
| |
| Here are the results : |
| QUERY="//author" (no match in the file) |
| Reading document |
| took 1.336457 sec |
| Starting query |
| took 307.572385 sec |
| Indexing DOM |
| took 0.125362 sec |
| Starting query |
| took 84.692544 sec |
| |
| QUERY="//date" (few matches in the file) |
| Reading document |
| took 1.341848 sec |
| Starting query |
| took 308.466919 sec |
| <date> 10 October 1996</date><date>1 August 1996</date><date>17 April |
| 1996</date><date> 17 April 1996</date><date> 17 April 1996</date><date> 12 |
| April 1996</date><date>27 March 1996</date><date>27 March |
| 1996</date><date>23 February 1996</date><date>9 December 1996</date><date> |
| 29 November 1996</date><date> 31 October 1996</date>Indexing DOM |
| took 0.128668 sec |
| Starting query |
| took 85.145023 sec |
| <date> 10 October 1996</date><date>1 August 1996</date><date>17 April |
| 1996</date><date> 17 April 1996</date><date> 17 April 1996</date><date> 12 |
| April 1996</date><date>27 March 1996</date><date>27 March |
| 1996</date><date>23 February 1996</date><date>9 December 1996</date><date> |
| 29 November 1996</date><date> 31 October 1996</date> |
| |
| |
| Result : |
| Indexing is worth the price ! Very quick index build, and 3.5x speed gain |
| ... |
| But, it very slow anyway :( |
| |
| Is this the "normal" performance ? Can I do better? |
| --> |
| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <div id="console"></div> |
| |
| <script> |
| |
| req = new XMLHttpRequest; |
| req.open("GET", 'resources/od_20000608.xml', false); |
| req.send(null); |
| xml_dom_object = req.responseXML; |
| |
| EXPR = '//author' |
| nodeset = xml_dom_object.evaluate(EXPR, xml_dom_object, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null); |
| shouldBe('nodeset.snapshotLength', '0') |
| |
| EXPR = '//date' |
| nodeset = xml_dom_object.evaluate(EXPR, xml_dom_object, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null); |
| shouldBe('nodeset.snapshotLength', '12') |
| |
| </script> |
| <script src="../../../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
