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Using the binary heap dump file from http://www.netbeans.org/issues/show_bug.cgi?id=120324, I opened it using NetBeans 6 Beta2 running on JDK6u3 on a Solaris SPARC system. It opened up in less than 2 minutes. So even without the changes in http://www.netbeans.org/issues/show_bug.cgi?id=120324, performance on Solaris SPARC seems much better than on Linux. :-) Unfortunately, after I closed the heap dump window in the IDE, I was unable to open it again. I get this error message in a dialog box: Map Failed. The only message that looks interesting in the log file is this: SEVERE [org.netbeans.lib.profiler.infolog]: Cannot create HeapWalker [/home/gs145266/public_html/htsfull.bin] So it worked well once, but not a second time.
*** This issue has been marked as a duplicate of 120363 ***