I want to user oprofile profiling hadoop, 
I do the configuration following manual as below

1 ./configure --with-kernel-support --with-java=/usr/java/jdk1.6.0_25/ 
2 vi /etc/profile
 LD_LIBRARY_PATH={my oprofile path}/lib/oprofile
export JAVA_TOOL_OPTIONS="-agentlib:jvmti_oprofile"

I set oprofile as timer interrupt mode

opreport --long-filenames 

I find all samples of /usr/java/jdk1.6.0_25/jre/bin/java is anon(tgid...)

how to do to resolve the problem, is there anybody have used oprofile profiling hadoop?