I sometimes browse the forums and came across your post.
I am currently running the "Unixbench" test after looking over your scores. While the test is finishing let's see if we can't solve some performance issues!
First, have you created a sufficient swap file? A quick google will show you how to enable a swap file and the size it ought to be.
Second, Ceph is slow compared to dedicated fiber NAS speeds. Calling it "slow" is relative to the task it has at hand. I get 195MB/s dd from /dev/zero (That's MegaBYTES, not Megabits)
I also get nearly 20 MB/s from Dallas, while I can buy a better link from my local fiber guys, it's not bad for a colo at all. Keep in mind that this is a single source uploading the file during the network tests and it may or may not saturate the pipe completely.
Finally, benchmarks are highly subjective and there is not a lot of objective material you can obtain from just running a benchmark. I certainly have not felt any sort of sluggishness on my end and I compile kernels and binary's on the regular.
I'll be back once I get the results and we'll figure out how to get you some better performance.