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chanzuckerberg / single-cell-data-portal

The data portal supporting the submission, exploration, and management of projects and datasets to cellxgene.
MIT License
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Investigate GE frontend performance problem rendering heatmap AFTER getting the query-by-genes result back from the backend #6295

Closed prathapsridharan closed 10 months ago

prathapsridharan commented 10 months ago

Reproduction Steps

  1. Go to https://cellxgene.cziscience.com/gene-expression - a backend query is sent to fetch data but this is quite fast
  2. Expand "Brain" Tissue and info icon on "stem cell" - a backend query is sent to fetch rolled up data - this takes about 6 seconds - not fast but is a known performance issue that is currently being investigated
  3. Add the 25 marker genes on "stem cell" to dot plot - Notice it takes very long to render the heatmap even though there is no query to the backend - It feels like it takes longer to render the heatmap than the RTT for the backend API call!!!
  4. Expand any other tissues ("large intestine", "small intestine" ,etc) - Notice it takes very long to render the heatmap even though there is no query to the backend - It feels like it takes longer to render the heatmap than the RTT for the backend API call!!!

See attached video to get a feel for this:

https://github.com/chanzuckerberg/single-cell-data-portal/assets/5581819/f3dae993-dd59-4e3b-88c1-8b813ff2ba8c

kaloster commented 10 months ago

findings posted here: https://czi-sci.slack.com/archives/C0247APK621/p1702582794788949

closing this and will create a new ticket with action items once direction decided on by product