René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Suboptimal performance when rendering large amount of traces","articleBody":"Here is the [testing script](https://jsfiddle.net/smileyhaowen/tf4bpk5w/3/)\r\n\r\nI kept the total data points fixed, and tested different combinations of amount of traces and amount of data points per trace:\r\n\r\n![image](https://cloud.githubusercontent.com/assets/3392907/24511265/8f45107a-1539-11e7-837c-689b2822d053.png)\r\n\r\nYou could see that 5000 traces needs 17 seconds to render even it only renders 5000 markers in total. But for the case of only 1 trace, scattergl could use that 17 seconds to render over 10 million markers!\r\n\r\nAnd by looking into the code I found that for each trace we created a Scene2D and a Shader, which get the shader reference and rebuild program. Is there anything we can optimize here?\r\n","author":{"url":"https://github.com/hy9be","@type":"Person","name":"hy9be"},"datePublished":"2017-03-30T15:17:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/1535/plotly.js/issues/1535"}