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Large .cpuprofile cannot be loaded in developer tools #223565

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Description

Type: Bug

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

  • VS Code Version: 1.92.0-insider
  • OS Version: Windows 11

Steps to Reproduce:

  1. Unzip the user-provided .cpuprofile files here
  2. Launch VS Code
  3. Developer: Toggle Developer Tools
  4. Switch to the "Performance" tab.
  5. Load pylance_2024.7.1_bg_1_id_0.cpuprofile

Result:

Initially the profile seems to be getting loaded:

image

After a minute or two, the window goes black and "never" (I waited 20-30 minutes) recovers. However, loading other, smaller files from the same ZIP succeeds. For example, pylance_2024.7.1_fg_id_0.cpuprofile.

image

VS Code version: Code - Insiders 1.92.0-insider (5fe066f, 2024-07-24T20:30:23.504Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info
Item Value
CPUs Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 x 3192)
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
skia_graphite: disabled_off
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) undefined
Memory (System) 63.85GB (45.18GB free)
Process Argv --disable-extensions --crash-reporter-id ea9101de-1db0-4418-be8b-d4d0b3c9b928
Screen Reader no
VM 0%
Extensions disabled
A/B Experiments
vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscod805cf:30301675
vsaa593:30376534
py29gd2263:31024238
c4g48928:30535728
2i9eh265:30646982
962ge761:30841072
pythongtdpath:30726887
welcomedialog:30812478
pythonnoceb:30776497
asynctok:30898717
dsvsc013:30777762
dsvsc014:30777825
dsvsc015:30821418
pythonregdiag2:30926734
pythonmypyd1:30859725
2e7ec940:31000449
pythontbext0:30879054
accentitlementst:30870582
dsvsc016:30879898
dsvsc017:30880771
dsvsc018:30880772
cppperfnew:30980852
pythonait:30973460
da93g388:31013173
a69g1124:31018687
dvdeprecation:31040973
dwnewjupyter:31046869
nb_pkg_only:31057982
nativerepl1:31093711
refactort:31084545
pythonrstrctxt:31093868
hdi1a554:31091669
flightc:31102344

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