> The question becomes what is significantly different in the Apache > test? Is the Apache test essentially a network i/o test? What is > significantly different here that would not end up being tracked to an > upstream kernel networking stack regression? Is the apache performance > collatoral damage from selinux related latency? Something else in > userspace slowing Apache down. I've no idea. I can't imagine its > compiler related options on the Apache binaries.
Without knowing how exactly the benchmark works I would guess that most of those apache requests are kernel calls so SELinux _might_ make a huge difference here. Perhaps somebody from the SELinux team should tell phoronix about it (and to _always_ test with SELinux disabled to measure the price of security).
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