VS Code lags to the point of being unusable in large repos

[jefgen]

Type: Bug

When this extension is enabled for a really large repo, editing simple markdown files becomes so slow that VS Code is no longer even usable.

I used the Extension Bisect feature to narrow down which extension was causing the issue, and it appears to be coming from this one only.

Looking in Process Explorer, I see lots of rg.exe processes being spun up when editing a markdown file. I'm not sure why so many are being created.

Steps to repo:

• Clone and open a large repo.
• Try to edit a simple markdown file in the repo.
• VS Code becomes laggy to the point of being unusable.

Extension version: 3.4.2 VS Code version: Code 1.83.1 (f1b07bd25dfad64b0167beb15359ae573aecd2cc, 2023-10-10T23:48:05.904Z) OS version: Windows_NT x64 10.0.25978 Modes:

System Info

|Item|Value| |---|---| |CPUs|Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz (12 x 3492)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: enabled_on
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled| |Load (avg)|undefined| |Memory (System)|31.93GB (13.30GB free)| |Process Argv|--crash-reporter-id 8d1aab88-1037-441d-bd02-8a56ae6607cf| |Screen Reader|no| |VM|0%|

A/B Experiments

``` vsliv368cf:30146710 vsreu685:30147344 python383:30185418 vspor879:30202332 vspor708:30202333 vspor363:30204092 vstes516:30244333 vslsvsres303:30308271 vserr242:30382549 pythontb:30283811 vsjup518:30340749 pythonptprofiler:30281270 vshan820:30294714 vstes263cf:30335440 vscorecescf:30445987 vscod805:30301674 binariesv615:30325510 bridge0708:30335490 bridge0723:30353136 vsaa593cf:30376535 pythonvs932:30410667 py29gd2263cf:30856253 vsclangdc:30486549 c4g48928:30535728 dsvsc012:30540252 pynewext54:30695312 azure-dev_surveyonecf:30548226 282f8724:30602487 89544117:30613380 2i9eh265:30646982 showlangstatbar:30737416 03d35959:30757346 pythonfmttext:30731395 fixshowwlkth:30771522 showindicator:30805244 pythongtdpath:30769146 i26e3531:30792625 pythonnosmt12:30797651 pythonidxpt:30805730 pythonnoceb:30805159 copilotsettingc:30859502 dsvsc013:30795093 dsvsc014:30804076 diffeditorv2:30821572 pythonmpsinfo:30842941 dsvsc015:30845448 pyreplss2:30864989 pythontbext0:30864172 ```

[jefgen]

Possibly related issue #527

[damyanp]

+1 on this (was about to file essentially the same issue)

[stmillMSFT]

This issue is absolutely still repro, btw. I'm having this issue too. Same thing: no SARIF files in repo, and not even that big of a repo, but about a million rg.exe instances are spawned, and I can't type anymore. Even when markdown files aren't open. Mostly .ts and .tsx. Since this extension seems to have been pushed out via group policy for some unknown reason, please address as a higher severity; this is making internal work miserable.

[50Wliu]

@stmillMSFT could you create a new issue for what you're seeing, please?