>> not intending to pour gas on the flames, but there have been a number of >> ukernels since that are a fraction of the size of p9 (and less functional, >> by design). Some with very good performance. > > i'm not sure what "good performance" means. is there enough > functionality in current µkernels to even benchmark real work > against plan 9? you can microbenchmark the ukernel itself and run macrobenchmarks on operating systems sitting atop the ukernel. btw, there's even been one ukernel recently that has a formal proof of correctness (against its specification and some containment properties). Roughly a 10 man-year effort for about 7.5kloc. Not something you'd likely be able to do yet against something linux- sized. > the original problem posed was the "scalability of linux development". > how does l4 help with linux' development problems? no idea. > - erik Tim Newsham http://www.thenewsh.com/~newsham/