decode c stacktrace of JVM

[Le Huy]

Hi

I dump stacktrace of JVM (using pstack in linux) hoping to see the
inside work of the JVM.
I got quite useless information like this.

Does anyone know how to decode it, perhaps there is someway to
activate/use debug symbol ?

---------------------
Thread 4 (Thread 0x4e695b90 (LWP 11448)):
#0  0x00888410 in __kernel_vsyscall ()
#1  0x005a2bc5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x00e2667e in ?? () from
/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/lib/i386/server/libjvm.so
#3  0x61001340 in ?? ()
#4  0x61001328 in ?? ()
#5  0x00000001 in ?? ()
#6  0x00000001 in ?? ()
#7  0x61001000 in ?? ()
#8  0x00000000 in ?? ()
Thread 3 (Thread 0x4e674b90 (LWP 11449)):
#0  0x00888410 in __kernel_vsyscall ()
#1  0x004ff763 in poll () from /lib/libc.so.6
#2  0x00183274 in ?? () from
/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/lib/i386/libnet.so
#3  0x4e671b5c in ?? ()
#4  0x00000001 in ?? ()
#5  0x0000ea60 in ?? ()
#6  0x54534f50 in ?? ()
#7  0x6e6f2022 in ?? ()
#8  0x4e671b50 in ?? ()
#9  0x4e671b5c in ?? ()