`dart:analysis_server` takes 19GB memory

[fzyzcjy]

Well, I have reported here #41793 (comment), but I am not sure whether it is more reasonable to create a new issue, since the memory size is really really a lot IMHO. The original issue complains when it takes <2GB, while here it is nearly 20GB!

[incendial]

@fzyzcjy you have dart_code_metrics plugin enabled, right? The plugin API is the problem.

[incendial]

If you want to check what is the difference in memory with the standalone, let me know.

[fzyzcjy]

@incendial Hi thanks for the reply, but indeed no. I do not enable the dart_code_metrics plugin when using the analysis server; indeed I run dart_code_metrics separately to check lint problems. See the screenshot below (no plugins).

[incendial]

Ah, my bad then, my assumption was wrong. 93 contexts though... 🥲

[fzyzcjy]

93 contexts though... 🥲

Well... I know it looks like a nontrivial number. But is that too many? I have not heard of documents saying that I should use packages as few as possible...
(I have checked my code, it seems not very easy to merge those packages...)

The total number of Dart lines is at the quantity of 100kloc (e.g. 200kloc, I forget the exact numbers). There are a few packages that are huge, and many are small.

[keertip]

/cc @scheglov @srawlins

[scheglov]

@bwilkerson @jacob314 as an anecdotal evidence that users with many analysis contexts exist :-D

[jensjoha]

From the screenshot you're running an old version of dart. The new version should have a "Collect Report" option at the top of the "Analysis Server Diagnostics" page which could help us diagnose this problem. (It also contains some memory optimizations so updating might even help the problem in itself).

[fzyzcjy]

@jensjoha Thanks for the information! Yes I am using Flutter 3.7 (and dare not update to 3.10.0 since many people are saying it is buggy (though exciting)... so may have to wait for something like 3.10.3). I will update this post with the collected report once I upgrade.