Can you do it for me please? I have repeated the tests with some vanilla kernels again, as there is a remark in the bug report for tainted or distro kernels. As I got a segmentation fault with the 2. With the AMD nForce 590 Series 9.35 test-case with threads, I got the problems threads: The meaning of the results: What I did not understand is: Why takes the test with threads and mutexes twice as long as the test[…]