Indeed -- that was before final optimization work on https://github.com/johnkerl/miller/pull/786 https://github.com/johnkerl/miller/pull/786 et al., thanks to w

Indeed -- that was before final optimization work on https://github.com/johnkerl/miller/pull/786 https://github.com/johnkerl/miller/pull/786 et al., thanks to which Miller 6 performance is now on par with Miller 5 for simple processing, and far better than Miller 5 for complex processing chains. See that PR for tabulated processing-time results.