Wow, what a lame benchmark. What about AOLServer maxconnections, max and min threads, if stats were on, if verbose logging and debugging was on, what type and size of caching was done, if ab was run on localhost, if it was run over the network, what speed in mbps the network was if applicable, compile time options, etc.
Now, since I'm a whiner, I might as well do my own benchmarks. I'll have to move over to linux first though. I'm on FreeBSD now, and from what I read it isn't 1-1 like linuxthreads. A few weeks or so ago, I wanted to test performance using linux binary emulation, and downloaded the linux binary off the aolserver site. What's weird is upon execution, aolserver opened a number of processes, unlike my setup on FreeBSD. Quick benchmark results revealed 50% of the performance I was getting in the default FreeBSD port. I'm not willing to venture why, but instead will wait until I convert the box over to Linux to test.