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Examining latest "language shootout" results at
I noticed a significant relative performance degradation when
comparing LuaJIT-2.beta on x86 one-core
versus x-86 quad-core

On a single-core LuaJIT-2 looses to GCC 1:2 while on quad-core 1:7.

Is there any hope that LuaJIT will use multi-threading? After all, it
traces the execution and knows at run-time what paths are parallel.