Regression: Performance degradation with java.beans.XMLEncoder

SYNOPSIS
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Performance degradation with java.beans.XMLEncoder

OPERATING SYSTEM
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All

FULL JDK VERSION
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JDK 7 (tested with b146)
Performance first regressed in either JDK 7 b65 or JDK 7 b66.
Degradation became worse in b71 or b72.
For JDK 6, became slightly worse in 6u25. Not reproducible in 6u24.

REPRODUCTION INSTRUCTIONS
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1. Compile the two attached Java classes.
2. Run "java JavaBeanXmlEncoder"

Comparison of results from 7b64, 7b66, and 7b72:

---- 7b64 ----
Encoding to a file .....
Total Time taken for Encoding as XML = 1032 in Millsecond
-------------

---- 7b66 ----
Encoding to a file .....
Total Time taken for Encoding as XML = 6141 in Millsecond
-------------

---- 7b72 ----
Encoding to a file .....
Total Time taken for Encoding as XML = 7954 in Millsecond
-------------

TESTCASE
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See attachments.