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Grid Performance Issues

jon hanson
5 years ago Jul 26, 2016 5:59pm
Vesa Tuononen
5 years ago Jul 26, 2016 8:22pm

Known issue.
Suggested workaround is use Spreadsheet not the Grid.
https://vaadin.com/forum#!/thread/13624019

I've also found that if you manually set column widths it cut down rendering time a little.
You can use superdevmode and profiler tools in Browser those give quite detailed inforamation what methods takes long.

jon hanson
5 years ago Jul 27, 2016 7:03am

Thanks for that. This comment is interesting:

Grid is by design not optimized for "spreadsheet-like" use

So Grid, the new high-performance replacement for Table, is actually slower for "spreadsheet-like" usage, The latter term includes even moderately large numbers of columns (20+).

They really should make the limitations of Grid clear in the documentation. I spent several days rewriting my code to use Grid (mostly to use to use the new multi-level row headers), and another few days investigating this perf issue and trying various fixes to avoid it, and now it looks like I will have to port it back to Table.

Unfortunately, Spreadsheet is a commercial product, and my use case is for a simple support tool so this is not an option.

Do you have any sense of whether a fix is in the pipeline for this?