Bufferbloat, rotational disk + BBU style. In case you still you magnetic disks to back a database taking writes, it can be worthwhile to disable "intelligent" controllers that do their own caching/readahead:pic.twitter.com/OoNs560vNU
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
The benchmark here is just postgres' pgbench. The metrics are a combination of self written tools, and wrappers around tools like iostat (parsing it into separate CSV files). Then a scripts which loads them into pandas, and uses matplotlib to generates the graphss.
Plan to publicize that set of scripts.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.