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library/libexpat/testdata/README.txt

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+This directory contains various collections of files used for test
+data.  It currently contains the following collections:
+
+largefiles/
+    This contains some really large files; most are used for
+    benchmarking various aspects of Expat's performance.

library/libexpat/testdata/largefiles/README.txt

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+This directory contains some really large test files, mostly used to
+benchmark various aspects of Expat's performance.
+
+(As files are added, they should be described here, including what
+benchmark program they're intended to be used with and what that
+resulting measurements tell us.)
+
+* nes96.xml (~2.8 MB): 
+  - properties: no namespaces, mixed content, average nesting depth
+  - source: http://sda.berkeley.edu:7502/ddi/nes96/
+    (no indication of license or copyright there)
+  - purpose: mostly for performance testing with the benchmark utility
+
+* wordnet_glossary-20010201.xml (~14.4 MB): 
+  - properties: namespaces, element content, flat 
+  - source: http://www.semanticweb.org/library/wordnet/
+    (license looks Open Source, see license.html file on the same page)
+  - purpose: mostly for performance testing with the benchmark utility
+
+* recset.xml (~29.1 MB): 
+  - properties: small portion with namespaces, bulk without, element
+    content, flat
+  - source: test data donated by Karl Waclawek
+  - purpose: mostly for performance testing with the benchmark utility
+
+* ns_att_test.xml (~34.2 MB): 
+  - properties: lots of prefixed attributes (28 on average), element
+    content, flat
+  - source: test data donated by Karl Waclawek
+  - purpose: mostly for performance testing with the benchmark
+    utility, specifically for testing the duplicate attribute check in
+    storeAttributes()
+
+