On Saturday 28 January 2012 07:26:59 Anthony G. Basile wrote: > I've run nbench on two amd64 systems both running the same kernel > vanilla-3.2.2.
i don't think nbench is a good benchmark for this as it isn't really testing what you think it's testing. it's very good at validating math support in the ISA/ABI, optimized compiler output, and supplementary math implementations in libgcc. PIE vs non-PIE will still be able to multiply/divide in pretty much the same amount of time. > So at least on amd64, I don't think that performance is ever an issue. yes, most likely on systems where the PIC has hardware support in the ISA, the performance hit on PIE is typically low. > I have yet to look at x86. pretty sure this is going to be much more palpable. -mike
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