Responsiveness when selecting "all sources" and threshold 0

[nicoapg]

This was reported through our Linkedin channel:

When I enter "oxi" with a threshold of 0 and all sources checked the app hangs. Hope I didn't crash it. If yes, my sincerest apologies.

After running a few experiments, what I observed is the following:

_I tried an experiment pushing it to a threshold of 0 with all sources selected and with a threshold of 0 to replicate the behavior you mentioned. Indeed I got a Timeout. It may have to do with the scale of this request: with that specific search, what one obtains is the entire list of substances available. Extracting the entire list of names defeats the purpose of the tool which is to reduce the number of candidates to those relevant to the search. Nonetheless we appreciate your feedback so we can look into it!

I run a couple more experiments, testing how we actually expect the users to use the tool. Here I share a bit the performance that I have observed:

Single source FDA, threshold 70, results after 5seconds.
All sources, threshold 80, results after 1 min 15 seconds.
All sources, threshold 70, results after 1 min 25 seconds.
All sources, threshold 60, results after 1 min 40 seconds.
All sources, threshold 50, results after 2 min 17 seconds.
All sources threshold 40, results after 1 min 47 seconds._

COMMENT: If users stay within expected use of tool, there is no problem to address. The problem is nonetheless interesting and when we decide to invest resources in development, we could transform this into a user story.