Slow performance after 1.77 update

[mjbvz]

@mjbvz
It happened for me in all code repos I tried, including public ones such as https://github.com/microsoft/vscode/. For now I can't point to specific location in code and editing action where this problem reproduces 100%.

I can only confirm that disabling error handler telemetry (e.g. with sergei-dyshel@122c48b) eliminates the issue.

When I have some more time I'll try to investigate it a bit more.

Originally posted by @sergei-dyshel in #178799 (comment)

[mjbvz]

@jrieken Can you investigate this. The reporter suggests it may be related to extension host exception handling

[DPRIYATHAM]

I do have the same issue, before I checked this issues section, I thought some issue with my laptop and reinstalled vs code, still issue hadn't resolved, then I realized it is 1.77v problem after viewing this issue, thanks for making this issue, else I would be sitting the whole night to debug the issue. 💀

[jrieken]

/needsMoreInfo

Please use this guide to provide more information: https://github.com/Microsoft/vscode/wiki/Performance-Issues#startup-timer. Thanks.

[VSCodeTriageBot]

Thanks for creating this issue! We figured it's missing some basic information or in some other way doesn't follow our issue reporting guidelines. Please take the time to review these and update the issue.

Happy Coding!

[sergei-dyshel]

@jrieken
May I ask how is startup time is related here? The slowness happens during using language features, not on start.

Instead, can you provide information/link to guide on how to debug extension host itself? Particularly I'm interested:

1. Putting breakpoints in exthost code - I can put breakpoint in error handler to see when prepareStackTrace.
2. Adding debugging logs to exthost.
3. Existing PerformanceObserver/Histogram infrastracture that I can use to add error handler histograms by plugin.

[DPRIYATHAM]

@mjbvz is the issue resolved for you?
Is vs code starting normally?
Or are you still facing some issues while start up?
If you issue is solved please do let me know how you solved it,
Please help me to solve this slow start issue. 🥲

[hasokeric]

I am facing the same issue I am on the latest build Insiders.

[maccman]

Same here

[hasokeric]

@maccman I just downgraded to 1.76 and the problems are all gone!

sergei-dyshel@122c48b
https://vscode.blob.core.windows.net/insider/c9e3ef865539061b5602c6b9ac6030332aa1ce70/VSCodeSetup-x64-1.76.0-insider.exe

[maccman]

@hasokeric Me too - downgrade worked for me.

For any core-team members reading this, this seems like a real problem.

[DavidAmunga]

Thanks @hasokeric , Downgrade worked for me well. Hopefully this is resolved soon by the core team.

[maccman]

@jrieken bump :)

[jrieken]

Still needs actionable information. Please use this guide to provide more information: https://github.com/Microsoft/vscode/wiki/Performance-Issues and/or "F1 > Start Extension Bisect" to provide more information

[hasokeric]

Is this the related issue, finally someone caught it? We should be able to see if it solves it in the next minor releases, perhaps insiders... #184926

[jrieken]

closing that either dupe of #184926 or not actionable as no further information has been delivered