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home > news > developers > david dice: instruction selection for volatile fences : mfence vs lock:add

David Dice: Instruction selection for volatile fences : MFENCE vs LOCK:ADD

In the past the JVM has used MFENCE but, because of latency issues on AMD processors and potential pipeline issues on modern Intel processors it appears that a LOCK:ADD of 0 to the top of stack is preferable (Gory Details).


Date: May, 29 2009
Url: http://blogs.sun.com/dave/entry/instruction_selection_for_volatile_fences


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