https://www.theregister.co.uk/2018/01/15/solarwinds_aws_meltdown_fix_analysis/

Log-sniffing vendor SolarWinds has used its own wares to chronicle the application of Meltdown and Spectre patches on its own Amazon Web Services infrastructure, and the results make for ugly viewing.

The image below, for example, depicts the performance of what SolarWinds has described as “a Python worker service tier” on paravirtualized AWS instances.