# WARNING: Unable to get Instrumentation. Dynamic Attach failed. You may add this JAR as -javaagent manually, or supply -Djdk.attach.allowAttachSelf # WARNING: Unable to attach Serviceability Agent. You can try again with escalated privileges. Two options: a) use -Djol.tryWithSudo=true to try with sudo; b) echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope # Running 64-bit HotSpot VM. # Using compressed oop with 3-bit shift. # Using compressed klass with 3-bit shift. # WARNING | Compressed references base/shifts are guessed by the experiment! # WARNING | Therefore, computed addresses are just guesses, and ARE NOT RELIABLE. # WARNING | Make sure to attach Serviceability Agent to get the reliable addresses. # Objects are 8 bytes aligned. # Field sizes by type: 4, 1, 1, 2, 2, 4, 4, 8, 8 [bytes] # Array element sizes: 4, 1, 1, 2, 2, 4, 4, 8, 8 [bytes] ***** 32-bit VM: ********************************************************** java.lang.StackFrameInfo object internals: OFFSET SIZE TYPE DESCRIPTION VALUE 0 8 (object header) N/A 8 2 short StackFrameInfo.bci N/A 10 1 boolean StackFrameInfo.retainClassRef N/A 11 1 (alignment/padding gap) 12 4 java.lang.Object StackFrameInfo.memberName N/A 16 4 java.lang.StackTraceElement StackFrameInfo.ste N/A 20 4 (loss due to the next object alignment) Instance size: 24 bytes Space losses: 1 bytes internal + 4 bytes external = 5 bytes total ***** 64-bit VM: ********************************************************** java.lang.StackFrameInfo object internals: OFFSET SIZE TYPE DESCRIPTION VALUE 0 16 (object header) N/A 16 2 short StackFrameInfo.bci N/A 18 1 boolean StackFrameInfo.retainClassRef N/A 19 5 (alignment/padding gap) 24 8 java.lang.Object StackFrameInfo.memberName N/A 32 8 java.lang.StackTraceElement StackFrameInfo.ste N/A Instance size: 40 bytes Space losses: 5 bytes internal + 0 bytes external = 5 bytes total ***** 64-bit VM, compressed references enabled: *************************** java.lang.StackFrameInfo object internals: OFFSET SIZE TYPE DESCRIPTION VALUE 0 12 (object header) N/A 12 2 short StackFrameInfo.bci N/A 14 1 boolean StackFrameInfo.retainClassRef N/A 15 1 (alignment/padding gap) 16 4 java.lang.Object StackFrameInfo.memberName N/A 20 4 java.lang.StackTraceElement StackFrameInfo.ste N/A Instance size: 24 bytes Space losses: 1 bytes internal + 0 bytes external = 1 bytes total ***** 64-bit VM, compressed references enabled, 16-byte align: ************ java.lang.StackFrameInfo object internals: OFFSET SIZE TYPE DESCRIPTION VALUE 0 12 (object header) N/A 12 2 short StackFrameInfo.bci N/A 14 1 boolean StackFrameInfo.retainClassRef N/A 15 1 (alignment/padding gap) 16 4 java.lang.Object StackFrameInfo.memberName N/A 20 4 java.lang.StackTraceElement StackFrameInfo.ste N/A 24 8 (loss due to the next object alignment) Instance size: 32 bytes Space losses: 1 bytes internal + 8 bytes external = 9 bytes total