Last month I provided Bootchart results from Linux 3.0 to Linux 3.6 with each major kernel release being timed. In this article are clean installs of Ubuntu 12.10 and earlier releases while measuring the performance.
More results will come when Ubuntu 12.10 is officially released later in the month, so this is just a preview.
The first results were from the ALUSA Atom Desktop with an Intel Atom D525 CPU and a 500GB SATA HDD. Ubuntu 12.10 was tested and compared to Ubuntu 12.04.1 LTS and Ubuntu 10.10. Ubuntu 12.10 booted in 31.78 seconds while Ubuntu 12.04.1 LTS took 45.49 seconds to boot. Ubuntu 12.10 is clocking in at around 31.78 seconds, which is an improvement over the earlier release but still slower where the Atom desktopw as running two years back. The maximum disk throughput during the process went from 53MB/s to 38MB/s to 77MB/s.
If You're Lucky, Ubuntu 12.04 LTS Can Boot Faster. There's also other Ubuntu 12.10 benchmarks.