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Opening the heap dump with more than 48,800,000 instances is unnecessary slow on 64bit JVM. 64bit JVM can map LongMap into memory. Current implementation fall back to file access if the backing file for LongMap is bigger than Integer.MAX_VALUE.
Fixed in profiler-main changeset: 126982:0d92ccb3daa3 user: Tomas Hurka <thurka@netbeans.org> date: Thu Apr 16 11:48:40 2009 +0200 summary: bugfix #162803, try to use memory-mapped file even if file size is bigger than Integer.MAX_VALUE
Integrated into 'main-golden', will be available in build *200904171401* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/0d92ccb3daa3 User: Tomas Hurka <thurka@netbeans.org> Log: bugfix #162803, try to use memory-mapped file even if file size is bigger than Integer.MAX_VALUE