[Performance] Sidebar Performance at Scale

[marcaaron]

What performance issue do we need to solve?

OptionsListUtils and SidebarLinks are pretty slow and the issues get worse as you increase the number of reports.

As recently discovered in this fire.

What is the impact of this on end-users?

Slow boot time, slow chat switching, in some extreme cases inability to use the app.

List any benchmarks that show the severity of the issue

Proposed solution (if any)

Steps we should take in order of priority...

• Memoization can help with performing unnecessary re-calculations
• Make more holistic improvements to how options are calculated to remove other bottlenecks
• Long term we need to implement some kind of pagination

List any benchmarks after implementing the changes to show impacts of the proposed solution (if any)

Note: These should be the same as the benchmarks collected before any changes.

Platform:

I assume everywhere.

Version Number: v1.1.87-8
Logs: https://stackoverflow.com/c/expensify/questions/4856
Notes/Photos/Videos: Any additional supporting documentation
Expensify/Expensify Issue URL:

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[melvin-bot]

This issue has not been updated in over 15 days. eroding to Monthly issue.

P.S. Is everyone reading this sure this is really a near-term priority? Be brave: if you disagree, go ahead and close it out. If someone disagrees, they'll reopen it, and if they don't: one less thing to do!

[melvin-bot]

This issue has not been updated in over 15 days. eroding to Monthly issue.

P.S. Is everyone reading this sure this is really a near-term priority? Be brave: if you disagree, go ahead and close it out. If someone disagrees, they'll reopen it, and if they don't: one less thing to do!

[melvin-bot]

Triggered auto assignment to @CortneyOfstad (AutoAssignerTriage), see https://stackoverflow.com/c/expensify/questions/4749 for more details.

[CortneyOfstad]

@marcaaron Just checking to see if this is still occurring, or if this can be closed? Thanks!

[CortneyOfstad]

@marcaaron appears to be OoO. Closing until they return.

Feel free to reopen if issue is still occurring!