I've complained about Linux's uptime calculation many times (combining cpu and io blocking into one measure makes it impossible to interpret!). I think I was mi

I've complained about Linux's uptime calculation many times (combining cpu and io blocking into one measure makes it impossible to interpret!). I think I was missing two things to come up with this solution: * A flash of insight to take the specific number of threads out of the picture. (And it's become particularly irrelevant since systems now have a mix of blocking and non-blocking programs, and ever higher concurrency, so radically different thread counts for the same work. Maybe that's part of your answer; that range has expanded over time.) * The belief I could / willingness to get something like this merged into the kernel. Besides the inherent difficulty of kernel programming (significant but surmountable), the Linux kernel community is not regarded as welcoming... Maybe this is changing. We'll see if Linus's new attitude lasts.