Using DataFrames: ~ 10 seconds

[ChrisRackauckas]

@iwelch

is this using so slow because the first time it only compiles to jit and there is a latter final compilation (from jit?) that takes so long? could something closer to the final compiled code be saved? will the using DataFrames speed up in 1.0, or will this be a long-term problem?

While there are things done during precompilation, IIUC it doesn’t actually cache any native compiled code. There have been discussions in the Slack saying that yes, this is a big thing on the 1.x list.