Due to popular demand I have done a CFQ run of these benchmarks on the same kernel+hardware. DL and AS results are the results I previously posted. Summary: Looks like CFQ still has some problems which need sorting out, AFAIK no tuning has been done, and Jens is currently caught up with other important stuff. So, don't read too much into these results. They are most useful as a bug report. Search for '*' to for my comments where I have seen problems.