in reply to Our perl/xs/c app is 30% slower with 64bit 5.24.0, than with 32bit 5.8.9. Why?
My first thought is that the issue is with memory, and not whether it's a 32-bit or 64-bit processor running the package. Do the servers have the same amount of memory/ Is there sufficient memory to run the programs? Are there more instances of the programs running? What kind of shape is the cache in?
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