Vscode: Antimalware Service Executable high CPU usage when command palette try to load tasks

[mdpx]

• VSCode Version:
  Version: 1.29.0 (user setup)
  Commit: 5f24c93878bd4bc645a4a17c620e2487b11005f9
  Date: 2018-11-12T07:47:15.448Z
  Electron: 2.0.12
  Chrome: 61.0.3163.100
  Node.js: 8.9.3
  V8: 6.1.534.41
  Architecture: x64

• OS Version: Windows 10 Professional 1809 (Build 17763.55)

Steps to Reproduce:

1. Use shortcut keys to run svn commit/update tasks.
2. Vscode gets slow, Windows task manager showing high CPU usage from "Antimalware Service Executable". After 10 or 20 secends, integrated terminal is expanded and the tasks finally get started and done.

It's interesting that the "ASE" does not react when do the commit/update by using TortoiseSVN client or by typing commands in the terminal.

This problem is since the 1.29.0 update.

Does this issue occur when all extensions are disabled?: Yes.

Update:
So it seems nothing to do with shortcut keys 👇

[vscodebot[bot]]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Antimalware Service Executable spikes upon opening a Workspace (#63070)
  

[dbaeumer]

@Monkey-D-Pixel is this happening every time. We see something comparable with gulp but only when starting the task the first time.

[mdpx]

@Monkey-D-Pixel is this happening every time. We see something comparable with gulp but only when starting the task the first time.

yes, every time

[mdpx]

might be a specific case of #63055, not just svn tasks

[dbaeumer]

Adding @alexr00 since she is on #63055. How does the SVN task look like? Can you provide use with a GitHub repository we can clone that demos this?

[dbaeumer]

One try. If you add the following settings

    "npm.autoDetect": "off",
    "gulp.autoDetect": "off",
    "grunt.autoDetect": "off",
    "jake.autoDetect": "off"

to the workspace settings does it still reproduce ?

[mdpx]

@dbaeumer just user defined configurations in task.json, like this:
{ "taskName": "svn update", "type": "shell", "command": "svn update ${fileDirname} ", "group": { "kind": "svn", "isDefault": true } }
It's still reproducing after adding those settings.

And just found more about this:
If I ctrl+p, select "Run task" in the command palette, MOSTLY "ASE" will also spike, while there is a loading indicator at the bottom of the palette until the tasks are loaded. Then I choose one, the task is invoked immediately. SOMETIMES, normally after several times of trying the same steps, the tasks are loaded very quickly, with "ASE" not spiking.
So I think there is something wrong during loading tasks.

[alexr00]

I can repro. It does look as though something is very slow during loading tasks.
edit: Actually, I can only repro a slow down during the first time I load tasks after a window reload. @Monkey-D-Pixel, can you confirm whether you see the slowdown both times when you run the "Run Task" command, wait for it to load, then immediately run the "Run Task" command again?

[skarcha]

I think the sequence is: (slow down and DOES NOT work) -> (slow down and work) -> (slow down and DOES NOT work) -> (slow down and work) -> ...

[dbaeumer]

I forgot one task provider. Can you disable that one as well:

"typescript.tsc.autoDetect": "off"

[mdpx]

@alexr00 Yes, slows down both times.
@dbaeumer Finally, NO MORE slow down with this line added. But why?

[dbaeumer]

@Monkey-D-Pixel TypeScript provides task to build typescript project automatically and this seems to gotten slower in 1.29.

[alexr00]

@mjbvz, any ideas on why the typescript task provider has gotten slower in 1.29?

[roblourens]

Does this involve searching? Does it do a findFiles('**/tsconfig.json') or something? I've got #63070 and a couple others.

[Kcko]

I forgot one task provider. Can you disable that one as well:

"typescript.tsc.autoDetect": "off"

Thx, it solved my problem #63026

[franklin-ross]

I believe this is the same issue as https://github.com/Microsoft/vscode/issues/63055.

[mjbvz]

Yes, same root cause as #63070. The tsc task detector searches the workspace for all tsconfig.json files.

[alexr00]

@roblourens for FYI.

[roblourens]

Let's call this a dupe of #63070.