timing

[myoung3]

I recently manually timed a bunch of sections for a very large dataset. For reference
[1] "2020-02-20 16:00:00 passed errorcheck: x is non-overlapping."
[1] "2020-02-20 16:00:00setting y key\n"
[1] "2020-02-20 16:00:00setting y key complete\n"
[1] "2020-02-20 16:02:59foverlaps complete\n"
[1] "2020-02-20 16:05:24rbindlist complete\n"
[1] "2020-02-20 16:10:30value var counting complete\n"
[1] "2020-02-20 16:10:53prod_vars complete \n"
[1] "2020-02-20 16:12:10setkey z complete \n"
[1] "starting gforce \n"
[1] "2020-02-20 16:12:48 gforce complete \n"
[1] "2020-02-20 16:12:49division complete \n"
[1] "2020-02-20 16:12:50counting length complete \n"
[1] "2020-02-20 16:12:51duration check complete \n"
[1] "2020-02-20 16:12:52NA coverage replacement complete"
[1] "2020-02-20 16:12:52minmax stuff complete \n"
[1] "2020-02-20 16:12:52final setkey complete\n"

[myoung3]

new timings in 603b3ad
[1] "2020-02-23 00:44:16 passed errorcheck: x is non-overlapping."
[1] "foverlaps duration:"
user system elapsed
58.694 47.354 106.068
[1] "pmin/pmax duration:"
user system elapsed
61.431 39.642 101.259
[1] "pre-grouping var calculation:"
user system elapsed
52.146 41.800 94.130
[1] "gforce:"
user system elapsed
74.069 11.862 85.994
[1] "everything else:"
user system elapsed
1.185 0.553 1.748