uPlot

Intentionally not edited to add: Why are you using minified dependencies (like uPlot.iife.min.js[1] and uPlot.min.css[2]) for a desktop application? uPlot is also open source (released by Sorokin under MIT), but why aren't you following the terms of its license[3]? 1. <https://github.com/obdev/littlesnitch-linux/blob/main/webroo...> 2. <https://github.com/obdev/littlesnitch-linux/blob/main/webroo...> 3. <https://github.com/leeoniya/uPlot/blob/master/LICENSE>

> In Ardour (a cross-platform, libre, open source DAW), we actually compute and store min/max-per-N-samples and use that for plotting (and as the basis for further downsampling. this is, effectively, what uPlot does, too: https://github.com/leeoniya/uPlot/issues/1119

uPlot maintainer here. this looks interesting, i'll do a deeper dive soon :) some notes from a very brief look at the 1M demo: - sampling has a risk of eliminating important peaks, uPlot does not do it, so for apples-to-apples perf comparison you have to turn that off. see https://github.com/leeoniya/uPlot/pull/1025 for more details on the drawbacks of LTTB - when doing nothing / idle, there is significant cpu being used, while canvas-based solutions will use zero cpu when the chart is not actively being updated (with new data or scale limits). i think this can probably be resolved in the WebGPU case with some additional code that pauses the updates. - creating multiple charts on the same page with GL (e.g. dashboard) has historically been limited by the fact that Chrome is capped at 16 active GL contexts that can be acquired simultaneous

related: i had to jump through the Date hoops recently (again) when rewriting uPlot's DST and timezone handling, but i'm pretty happy with the result that avoided much complexity, performance loss, and adding a dependency: https://github.com/leeoniya/uPlot/pull/1072 fun demos: https://leeoniya.github.io/uPlot/demos/timezones-dst.html