[Tauri related "bug"] Extremely slow with large music collections on Linux

tranxuanthang / lrcget

Utility for mass-downloading LRC synced lyrics for your offline music library.

MIT License

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[Tauri related "bug"] Extremely slow with large music collections on Linux #44

Closed eprudspk closed 4 months ago

eprudspk commented 4 months ago

Description

The UI freezes for a few minutes when loading the 'tracks' tab with only 7K songs. It doesn't freeze for as long in the albums and artists tabs, seemingly because there are fewer entries.

Possible solution

I think the tracks list should be in a virtual scroller instead of having everything rendered in the DOM at once. Especially since with Tauri the Linux version runs on the slower Webkit2gtk instead of Webview2 on Windows. Webkit2gtk slows to a crawl when there are a lot of DOM elements.

I've had this exact problem with my web app, and it was fixed using a virtual scroller.

For reference, I used this one: https://tanstack.com/virtual/v3

tranxuanthang commented 4 months ago

I'm hoping I can get some time to work on LRCGET this weekend, and this is one of the problems I'll take a look at. Also thank you for the referenced link!

eprudspk commented 4 months ago

Hey, I just tested on commit https://github.com/tranxuanthang/lrcget/commit/8343ba61d6509da9bff11b880eb57c79e4f19fd3

It does greatly improve performance, it no longer freezes at all when loading any tab.

It seems there is no visible scroll bar anymore. However, I can still scroll, and even click where the scroll bar is supposed to be and it will scroll correctly.

Thanks for working on this !

eprudspk commented 4 months ago

It also seems to fix the memory issue I've been having while downloading lyrics.

It was using up to 9 GB (!!!) of ram just to download the lyrics, now it seems to stay at about 254 MB

tranxuanthang commented 4 months ago

Thank you for testing this and some early feedback! I think I have similar setup with you (KDE Plasma 5 on Wayland), but does not face the same scrollbar problem. I'll do some more testing before making a release, but if you can help me debug to see what went wrong about the scrollbar it would be great!

Edit: maybe because your music collection is large, so that the scrollar becomes too small to be visible?

eprudspk commented 4 months ago

KDE Plasma 5 on Wayland

Indeed, that's what I'm running.

maybe because your music collection is large, so that the scrollar becomes too small to be visible?

Don't think that's it, because:

the scroll bar was visible before the update
if I increase the height of the window, the scroll bar still doesn't show. (I have a vertical 16:9 monitor and tried it with LRCGET fullscreen)

eprudspk commented 4 months ago

I can confirm I have a scroll bar at least up to ed63edaaff0cd0c562e84a50ceedf656f1228a04

eprudspk commented 4 months ago

And from 503c842e1597547f1caf67460082aa1dda6dc741 I no longer have a scroll bar (might be a commit or two earlier, but I can't get them to compile)

eprudspk commented 4 months ago

The plot thickens, I tried setting the GTK style to something other than 'breeze' and it shows the scroll bar correctly… Setting it back to breeze still doesn't show the scroll bar.

I do find it strange, but that means if you override the default theming on the scroll bar, there's a good chance it'll show up.

tranxuanthang commented 4 months ago

I do find it strange, but that means if you override the default theming on the scroll bar, there's a good chance it'll show up.

@eprudspk The library overlayscrollbars-vue could be the reason. I'll create a commit to remove the leftover code of it.

https://github.com/tranxuanthang/lrcget/blob/0216c6ca957ff10ca7e7387564060b5cc0e93868/src/main.js#L2

(Or adding it back might also fix it too, but I remember I couldn't get it to work with virtual scroller)

Edit:

The plot thickens, I tried setting the GTK style to something other than 'breeze' and it shows the scroll bar correctly… Setting it back to breeze still doesn't show the scroll bar.

I did not face the same with my Breeze theme. I'm using Arch Linux. What is your Linux distro, and is it possible that it is a bug from old KDE versions?

Edit 2:

Could you test the latest commit?

https://github.com/tranxuanthang/lrcget/commit/55a849d47b753afc4606a5f77e419eceb1384348

eprudspk commented 4 months ago

Hey, the latest release seems to fix the scroll bar issue.

Thanks for your hard work !

What is your Linux distro, and is it possible that it is a bug from old KDE versions?

It's openSUSE Tumbleweed, it's on Plasma 5.27.10 and KDE Frameworks 5.115.0