Would be interesting to see how xsv compared to miller (https://johnkerl.org/miller/doc/index.html https://johnkerl.org/miller/doc/index.html) in terms of perf,

Would be interesting to see how xsv compared to miller (https://johnkerl.org/miller/doc/index.html https://johnkerl.org/miller/doc/index.html) in terms of perf, this tool comes exactly as I am about to munge 1TB of gzipped csv files. Unfortunately, the main operation I need is not supported by xsv...