Andrew Maguire commented on AIRFLOW-2086:

I found this too. I also found that for big dags with lots of tasks many of the 
charts become unusable due to the legend becoming so big (one could argue 
legend not really needed with lots of tasks as you can just hover over 
interesting stuff to see what it is). 

So it would be cool if some of the UI stuff could be configured for defaults 
etc in some way. 

> The tree view page is too slow when display big dag.
> ----------------------------------------------------
>                 Key: AIRFLOW-2086
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2086
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: webserver
>            Reporter: Lintao LI
>            Priority: Major
> The tree view page is too slow for big(actually not too big) dag. 
> The page size will increase dramatically to hundreds of MB.
> please refer to 
> [here|https://stackoverflow.com/questions/48656221/apache-airflow-webui-tree-view-is-too-slow]
>  for details.
> I think the page contains a lot of redundant data. it's a bug or a flaw of 
> design.

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