Clojurians Log v2

Some of your performance issues might depend on how much data you're sending to the browser via clerk/vl. If you have a large CSV or JSON (or other) dataset that you're repeatedly sending over the wire using something like {:values [...]} it can certainly incur a performance penalty, particularly if you're just displaying an aggregation or summary of that data. I try to avoid this by precomputing my aggregations on the Clojure side and doing less work using Vega's built-in aggregations and transformations.

Not that much data. 43k rows preprocessed with 3 columns. takes less than a second to render in the vega editor.

FWIW, I have also encountered difficult-to-reproduce performance issues with notebook display on Firefox, including a large gap between evaluation of the final cell and actual page display, as you describe.

Ok. I don't know enough about the Clerk stack to mod it. So right now it kind of feels like magic. For data exploration maybe it could be feasible to render the data with N parallel v2png (local render) calls instead.. and then switch to the clerk/vl when I want the interactivity. A bit of a hack though..

https://github.com/applied-science/darkstar I've used Darkstar for a similar purpose in the past.

Cool! I will take a look