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Hello,

first post here, so if I'm asking a question that has already been answered, please point me to that thread (I searched the forum but couldn't find an answer.)

Basically I'd like to know what is the performance impact of PaX alone (no grsec) on a 64 bit (x86_64) linux system and also on 32 bit.

The benchmarks I found here are quite old, I don't know if they still apply to the current version of PaX: http://www.pjvenda.net/linux/doc/pax-performance/

Btw, thanks for your work.

For x64 there's:
http://grsecurity.net/~spender/benchmarks.txt

on x86 the UDEREF hit would be nonexistent, and the stackleak hit would possibly be lower due to less stack usage.

-Brad