in reply to How much slower is perl (the binary) with threads than without?
I measure the difference every day when Test::Smokeing the perl core. The actual difference (runtime) changes over time, but at current blead, it is
| threaded | is | 5.1% | slower | than non-threaded |
| DEBUGGING | is | 4.4% | slower | than non-DEBUGGING |
| stdio | is | 5.2% | slower | than perlio |
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