High CPU usage when modifying custom CSS

[moalamri]

Is there an existing issue for this?

• I have searched the existing issues

Version of Corteza

2023.9

Current Behavior

When editing the Custom CSS, most of the time it runs ok, but sometimes it takes alot of time before returning a timeout, I monitored the server resources and it shows as following

Expected Behavior

No response

Steps To Reproduce

1. Change Custom CSS
2. Hit Submit

Environment and versions

No response

Anything else?

No response

[Fajfa]

Ok thanks, we'll take a look at that. Strange since it works without much processing on my end

[moalamri]

Hi @Fajfa
Whenever this happens, I check the action log and it's filled with such records

Please let me know if I can do anything else to helps you debug this
Thank you

[Fajfa]

https://forum.cortezaproject.org/t/dart-processes-running-forever/1934

[moalamri]

@Fajfa I’m sorry for closing the issue earlier because I thought it was from my setup. Glad to see that you have spotted the issue.

[KinyaElGrande]

@moalamri

I believe the root of the issue lies within Dart-Sass, particularly regarding the specific versions of Dart-Sass you're using.
Could you please provide the dart-sass version and if possible the style sheets as well?

I've repeteadly updated my stylesheets on corteza's custom-css-editor to lines spanning more than 25k while monitoring my CPU, which showed a steady pattern of spikes and drops.

Furthermore, there have been documented reports of CPU performance issues associated with Dart-Sass, as indicated by various issues such as:

• Issue 1557
• Issue 1534
• Issue 1913

Nevertheless, the Dart-Sass team asserts that many of these performance issues have been addressed in versions beyond v1.61.0.

Corteza's custon-css-editor screenshot

CPU metrics screenshot

[moalamri]

Hey @KinyaElGrande
I'm sorry for not being able to reproduce this again since I don't using Corteza for now and I remember it was a bit tricky to get it up and running because of proxy network is not being created or something, so I can't setup it again for further debugging.

I remember my Custom CSS was only few lines ~10 line or so. So, it wasn't a matter of payload size...
I wish I could be more helpful. I hope you can figure the issue and fix it if it does exist with other users.

[github-actions]

Stale issue message

[KinyaElGrande]

I believe this issue is related to #1856, which has been resolved.

[moalamri]

@KinyaElGrande You can close this issue and I will reopen it once I test the platform again and confirm if the issue still exists.