oracle.com	Oracle HotSpot Virtual Machine Garbage Collection tuning guide
jamesbloom.com oracle.com artima.com	JVM internals
stackoverflow.com	Different section of JVM [Eden/Serviver/Tenured + PermGen/CodeCache]
dzone.com stackoverflow.com github.com github.com	JIT compiler in JVM VM option (-XX:+PrintCompilation) will print all JIT optimizations at runtime VM option (-X) will print all Non-standard JVM options Output format: {compile_id}{method_attributes} {short_name} ({size} bytes)
java.net java.net	HotSpot JVM Runtime, OpenJDK8 Compiler/JVM source jvm.cpp register.cpp frame.cpp javaClasses.cpp symbolTable.cpp heap.cpp codeCache.cpp
oracle.com artima.com	HotSpot JVM Glossary PC register Stack Native Stack, Local Variables Operand Stacks Dynamic Linking Constant Pool Frame Heap Method area
github.com	HeapStats, a lightweight monitoring tool for Java heap and GC. Winner of JavaOne Duke’s Choice Awards
stackoverflow.com	Method area is a subset of PermGen area
java.net java.net	Compilation guide and source Automatic 'java.lang' package loading (line 521 call to 'importAll' method)
github.io github.com	JIT compiler and CodeCache in brief VM option (-Xint) will run JVM in interpreter mode only; No JIT Example program to see how -Xint can affect performance
stackoverflow.com	JIT compiler dynamic De-Optimization If an optimization did not, improve performance and undo that optimization
oracle.com oracle.com	Class Loading in JVM
oracle.com stackoverflow.com	Class Linking in JVM: Verification, Preparation, Resolution (VPR) of Symbolic References Symbolic References are used to retrieve the actual object Verification can be turned off by supplying the -noverify option
javainterviewpoint.com artima.com	Class Execution in JVM
lse.epita.fr murrayc.com	Class Format in JVM Class file uses Hexadecimal format
oracle.com	JDK class disassembler: javap -v -p -s -sysinfo com.test First put your jar in classpath(export CLASSPATH=your-jar.jar)
wikipedia.org oracle.com javaworld.com	Java bytecode instruction set
javaworld.com stackoverflow.com github.com	Java bytecode 'invoke' type instructions (VISSD) invokevirtual for class methods using dynamic dispatch invokeinterface for interface methods invokestatic for class methods invokespecial for constructor/private methods/super calls invokedynamic (indy) for Lambdas
stackoverflow.com java.net jvmlangsummit.com	How Lambdas uses invokedynamic (indy)
blogspot.in blogspot.in blogspot.in	JVM OutOfMemory Error and thread Dump Analysis using Eclipse MAT
stackoverflow.com	How JVM stores static/class references
stackoverflow.com	Interned String and Garbage Collection
stackoverflow.com openjdk.java.net	Difference of Metaspace and PermGen
oracle.com oracle.com stackoverflow.com	HotSpot VM Options(BGPD): Standard(-), Non-standard(-X), Developer (-XX) Behavioral options change the basic behavior of the VM Garbage First (G1) Garbage Collection Options Performance tuning options to be used to tune VM performance Debugging options to enable tracing/printing/output of VM info -XX:+PrintFlagsFinal lists all flags available in VM
javapapers.com fasterj.com stackoverflow.com javacodegeeks.com	Garbage Collection(SPCG): Serial Garbage Collector Parallel Garbage Collector CMS Garbage Collector G1 Garbage Collector
oracle.com oracle.com	Java G1 Garbage Collector (-XX:+UseG1GC)
oracle.com	Concurrent Mark Sweep (-XX:+UseConcMarkSweepGC)
oracle.com java.net	JVM Microbenchmarking "About 97% of the time: Premature optimization is the root of all evil" - Donald Knuth
securingjava.com stackoverflow.com stackoverflow.com	Class Loader Architecture
stackoverflow.com	Native instruction using JNI
superuser.com	CPU x86 registers
ascii.cl	Decimal, Hexadecimal, Octal, Binary conversion table
stackoverflow.com	Load all associated class info a running class (java -verbose)
ibm.com java-success.com villanova.edu stackoverflow.com	How Java objects/primitives stored in memory using visualvm
stackoverflow.com stackoverflow.com github.com stackoverflow.com stackoverflow.com	Why 'long' consumes more than 8 bytes in memory: Memory Padding Why 'byte' consumes 4 bytes in memory
stackoverflow.com stackoverflow.com	Garbage Collection tuning for Interned Strings Java Compressed Strings VM option (-XX:+UseCompressedStrings) is discarded in JDK7
stackoverflow.com stackoverflow.com github.com	JVM optimization using hoisting by JIT
stackoverflow.com blogspot.com	Maximum number of threads per JVM and (-XX:ThreadStackSize) VM option
stackoverflow.com	Why does the JVM still not support tail-call optimization
dzone.com mishadoff.com github.com	Understanding sun.misc.Unsafe for 'C' like direct memory access in JVM
virtualjug.com javaperformancetuning.com	An introduction to JVM performance by Rafael Winterhalter
plumbr.io	Minor GC vs Major GC vs Full GC