The Speed of Time

How long does it take to read the time? How would you time time? These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. While you're unlikely to run into this specific issue anymore, what is interesting is this type of issue and the simple method of debugging it: a pragmatic mix of observability and experimentation tools. I've shared many posts abo...