JDK-4747354 : Use ASCIICaseInsensitiveComparator for locale tables
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.lang
  • Affected Version: 1.4.2
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2002-09-13
  • Updated: 2002-10-25
  • Resolved: 2002-10-25
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Other
1.4.2 mantisFixed
Related Reports
Relates :  
JDK-4757212 - JVM 1.4.2 regression on Sierra EE startup compared to JVM 1.3.1 in mixed mode
Description
Investigation into traces of J2SE startup time has shown a significant
amount of time being spent in case-insensitive string comparison. Some
tables used internally to the JDK (specifically those related to
locale and character set names) use the java.lang.String
case-insensitive comparator, which, in order to support the Turkish
locale properly, can end up performing both Character.toUpperCase()
and Character.toLowerCase() on character inputs. These tables contain
only US-ASCII data; changing them to use a non-Turkish-compliant
case-insensitive comparator yields a small but consistent speedup.
Comments
CONVERTED DATA BugTraq+ Release Management Values COMMIT TO FIX: mantis FIXED IN: mantis INTEGRATED IN: mantis mantis-b05
14-06-2004
WORK AROUND
11-06-2004
SUGGESTED FIX
11-06-2004
PUBLIC COMMENTS
10-06-2004
EVALUATION Implemented in 1.4.2. ###@###.### 2002-09-13
13-09-2002