based on: http://svn.osgeo.org/osgeo/foss4g/benchmarking/geometry_libraries/comparisons/jts/
Download one of the tiger census counties file - I tested against the first (2 April 2013) one here http://www.nws.noaa.gov/geodata/catalog/county/html/county.htm
Extract all the files to a directory and edit the file location in the GeomBenchmark main method to point to the shp file you extracted
mvn clean compile mvn exec:exec
This is on a i7 920.
[INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building geom-performance-check 0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- exec-maven-plugin:1.2.1:exec (default-cli) @ geom-performance-check --- Reading content c_02ap13 Total Area730.0445917511591 JTS AREA: 2803 total: 730.0445917511679 other: 0 time: 0.073104899 s ESRI AREA: 2803 total: 730.0445917511674 other: 0 time: 0.08710406 s JTS CENTROID: 2803 total: -91.60642950541535 other: 38.08915874601412 time: 0.277397862 s ESRI - UNSUPPORTED CENTROID: -1 total: 0.1 other: 0.1 time: -1.0E-9 s JTS HULL: 2803 total: 822.4889226894915 other: 0 time: 0.578264693 s ESRI HULL: 2803 total: 822.4889226894913 other: 0 time: 1.394710517 s JTS INTERSECTION: 101 total: 158.5542576517064 other: 730.0445917511591 time: 6.606177194 s ESRI INTERSECTION: 101 total: 158.55425765345527 other: 730.0445917511589 time: 25.704174385 s JTS CLIP: 2803 total: 370.1493045493158 other: 730.0445917511591 time: 0.945118263 s ESRI CLIP: 2803 total: 370.14930454931573 other: 730.0445917511589 time: 0.514534584 s JTS SIMPLIFY: 2803 total: 6197.906981556354 other: 6213.17050681722 time: 0.752725677 s ESRI SIMPLIFY: 2803 total: 6198.08245123076 other: 6213.17050681722 time: 0.357620154 s JTS WITHIN: 2803 total: 2796 other: -1 time: 0.843608158 s ESRI WITHIN: 2803 total: 2796 other: -1 time: 0.454011268 s JTS CONTAINS: 2803 total: 2761 other: -1 time: 0.252709395 s ESRI CONTAINS: 2803 total: 2761 other: -1 time: 0.062269236 s TEST of the intersction of LINESTRING(0 0, 5 3) & LINESTRING(0 0, 1.2 0.72) Actual value is LINESTRING(0 0, 1.2 0.72) - but issues occur due to finite precision - checks robustness JTS Intersection: LINESTRING (0 0, 1.2 0.72) ESRI Intersection: MULTILINESTRING ((0 0, 1.2000000000000002 0.72)) [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 52.720s [INFO] Finished at: Sun Jun 09 17:47:57 EDT 2013 [INFO] Final Memory: 6M/183M [INFO] ------------------------------------------------------------------------
Interesting to note that against v. 1.10 of JTS the intersction test gave a value if POINT(0 0). (http://tsusiatsoftware.net/jts/jts-faq/jts-faq.html#D)
JTS seems to have fixed this in v. 1.13