[BUG] High cpu consumption when downloading a distro

[Felipe-Linhares]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current Behavior

notice that the video stopped. https://user-images.githubusercontent.com/70000056/226991348-b9a0d6d5-5529-4cd1-bb0d-d7d539e058d6.mp4

Expected Behavior

download the distro without crashing the machine

Steps To Reproduce

1. open wsl manager.
2. I went to add an instance.
3. I put the name.
4. I selected the distro I wanted.
5. I went to create.

Environment

- Windows Version: Windows 11 Pro 22H2 (22621.14.13)
- WSL Distro Manager Version: 1.6.1
- WSL Version: 1.1.3.0
- Source: Windows Store

Anything else?

No response

[github-actions[bot]]

Hello there! As you are a first time Issuer please read our Code of Conduct. Please also check whether your issue description is reasonable and complete. If you are having an issue always include the version you are using (WSL, this app, Windows) as well as a way to reproduce it.

[bostrot]

Could you share your hardware specs?

[Felipe-Linhares]

• RAM - 20GB
• IdeaPad 3 15ALC6 - AMD Ryzen 5 5500U
• SSD - NVMe IM2P33F4 256GB
• Free space - 50GB

[bostrot]

Hmm, that shouldn't be a problem.. Could you try restarting your pc, maybe ending background processes, and check if it is still that slow for you?

[Felipe-Linhares]

I did that, but even so, the high CPU consumption and the crash continued, I bought the version from the microsoft store, but it is outdated, it is at 1.6.0 :c

[bostrot]

That is a bug. That version shows 1.6.0 but in fact is 1.6.1. I will fix that very soon :)

Can you also tell me what your Internet bandwidth is? (trying to find a way to reproduce your issue)

[Felipe-Linhares]

Aaaaa, got it, my internet is 600Mb.

[bostrot]

Does this also happen whem you select other distros? E.g. Ubuntu 22.04?

[Felipe-Linhares]

it happens, I tested it with some Ubuntu available, and also Debian

[bostrot]

Can you try either version v1.6.0 (from the releases page) or the build here (build/windows/runner/release) v1.5.0?

Sorry, to make you do all this but I can't reproduce it :/

[Felipe-Linhares]

Okay, I just tested it in version 1.5.0 and 1.6.0, and the same error happens, it crashes the machine

• default cpu usage

• 1.5.0

• 1.6.0

[bostrot]

So the WSL2 Manager process makes the usage go to 100% or is it some other process (invoked by wsl manager maybe)? I am not seeing it in the process list.

[Felipe-Linhares]

It doesn't appear because the task manager hangs, everything hangs in fact, then I can't identify the process that is increasing the CPU usage

[bostrot]

I see.

Does it also happen when you manually import a rootfs with wsl (without WSL Manager)?

e.g. with Ubuntu 20.04 rootfs: wsl --import testimport C:\WSL2-Distros ~\Downloads\ubuntu-20.04-server-cloudimg-amd64-wsl.rootfs.tar.gz

[Felipe-Linhares]

everything went well, it didn't crash the system

[bostrot]

Not sure what is going wrong there then..

I saw that you checked out the source. Can you try to debug it and check somewhere along these lines where exactly it happens: https://github.com/bostrot/wsl2-distro-manager/blob/main/lib/dialogs/create_dialog.dart#L172

I suspect it might have something to do with the SharedPreferences as the only other thing there is probably the call to the import command and that should work as expected.

[Felipe-Linhares]

I'm going to debug here, if I get something that can help, I'll come back here, thanks for the answer

[bostrot]

Sure, tell me when you find something. I am curious.

Also just for references: the cpu usage on my machine is under 1% for this app when creating a distro.

[Felipe-Linhares]

is your machine AMD?

[bostrot]

I tried both on Intel and AMD machines.

[bostrot]

Just thought about something else: have you tried to disable any antivirus you have?

[Felipe-Linhares]

I hadn't thought of that, I'll try it here

[Felipe-Linhares]

I tried here but got the same result :C

[bostrot]

Do you have a second machine to test it on? Also any luck with debugging?

[Felipe-Linhares]

No, but I'll talk to a friend to test it, I had no luck with the debug, but I'm looking

[Felipe-Linhares]

managed to capture the WSL Manager process

[bostrot]

I had hoped that would help more :/

Could try to use the windows diagnose start and see if that changes anything? (win+r then msconfig the second option)

[Felipe-Linhares]

i tried but without success

[lesmo]

I'm finding this issue too on a Microsoft Surface Studio laptop with i7 11th gen and 32gb of RAM. The process didn't crash, but it slowed the entire PC down horribly.

I also have a Razer Blade 2019 (i7 8th gen, 64gb of RAM) I can test on, but that'll have to wait a bit cuz' I'm out of town for the week.

[bostrot]

@lesmo Do you have, by any chance, windows Ransomware protection on?

Also could you too check the task manager and see what process exactly is ramping up?

I guess you are on version 1.7.1?

EDIT: I will create a build with extra logging later. Maybe you can run that and hopefully it will tell us what is going wrong.

[bostrot]

Is this fixed with v1.7.4?

[bostrot]

Closing for now. Reopen if you still encounter this issue.