Also, UseCompressedOops was supposed to be turned on by default in hs14, bug somehow that changeset was lost. Coleen Phillimore - Sun Microsystems wrote: > > > On 09/26/08 20:07, Vladimir Kozlov wrote: >> First, UseParNewGC does not work with compressed oops: > It is supposed to. Is it broken or just not performant? > > thanks, > Coleen >> >> pf-t5120-1% gamma -XX:InlineSmallCode=1400 -XX:FreqInlineSize=210 -XX:+UseCompressedOops -XX:+AggressiveOpts -XX:ParallelGCThreads=40 -XX:+UseLargePages -XX:LargePageSizeInBytes=256m -XX:+AlwaysPreTouch -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Xmx28g -Xms28g -Xmn22g -XX:+UseParNewGC -XX:+PrintTenuringDistribution -Xss256k -cp jbb.jar:check.jar spec.jbb.JBBmain >> >> Exception in thread "main" java.lang.ClassCastException: java.util.LinkedHashMap$Entry cannot be cast to java.util.Map$Entry >> at java.security.Provider.ensureLegacyParsed(Provider.java:536)
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