JDK-7092825 : javax.crypto.Cipher.Transform.patternCache is synchronizedMap and became scalability bottleneck.
  • Type: Enhancement
  • Component: security-libs
  • Sub-Component: java.security
  • Affected Version: 7
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2011-09-20
  • Updated: 2013-04-22
  • Resolved: 2012-02-07
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JDK 7 JDK 8
7u4Fixed 8 b25Fixed
Description
javax.crypto.Cipher.Transform.patternCache is synchronizedMap and became scalability bottleneck when Cipher.getInstance() is frequently called.
Should be replaced to ConcurrentHashMap as suggect in the comment to that field.
The problem is important for SPECjvm2008:crypto.rsa and for SPECjvm2011.
Fix is suggested.
Comments
EVALUATION Suggested fixes looks reasonable. Will adopt the changes.
11-01-2012
SUGGESTED FIX attached webrev.zip contains suggested fix.
20-09-2011