TL;DR When describing the performance of systems, always prefer terms which are unambigious. Use “as fast as” speed ratios and “as long as” time ratios. Always use “faster” or “slower” when referring to speed, never time. When referring to time in percentage delta terms, explicitly state “time increased/decreased by X%”. Time ratio is time_new / time_baseline and speed ratio is time_baseline / time_new. Performance Language & Ambiguity As part of my work on the Buck2 build...
