Phoronix takes a look at Ubuntu 10.04 to Ubuntu 18.04 Linux Performance
A quote from the article:
With the Ubuntu 18.04 "Bionic Beaver" release fast approaching and it being the latest Long-Term Support release, the latest benchmarking at Phoronix has been looking at how the Ubuntu LTS performance has evolved going as far back as the Ubuntu 10.04.0 LTS "Lucid Lynx" release. On three systems where supported Ubuntu 10.04 / 12.04 / 14.04 / 16.04 / 18.04 were tested each time.A Look At Ubuntu 10.04 To Ubuntu 18.04 Linux Performance
On three older systems I went as far back as possible in testing each of the Ubuntu YY.04.0 LTS releases, as far back as Ubuntu 10.04.0. With Ubuntu 18.04 LTS I was using a daily development snapshot as of this week, considering the kernel version and all other key components are now onto their final versions. As the Ubuntu 18.04 LTS release approaches at the end of April, there will continue to be more benchmarks of this Linux distribution on Phoronix.