Bug 474609 - /usr/bin/plasmashell --no-respawn causes severe lagginess by reclaiming enormous amounts of virtual ram
Summary: /usr/bin/plasmashell --no-respawn causes severe lagginess by reclaiming enorm...
Status: RESOLVED WORKSFORME
Alias: None
Product: plasmashell
Classification: Plasma
Component: generic-performance (show other bugs)
Version: 5.27.8
Platform: openSUSE Linux
: NOR major
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-09-17 11:38 UTC by Jay Ambee
Modified: 2025-02-14 03:46 UTC (History)
2 users (show)

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Description Jay Ambee 2023-09-17 11:38:48 UTC
SUMMARY

Since I updated to Plasma 5.27.8, the /usr/bin/palsmashell --no-respawn claims a huge amount of RAM (up to 2/3rd of system RAM

Background: I have a 32 GB Ram amd G5700 System. I'm working (at this time) mostly with Obsidian.md, which, as an Electron-App itself uses lots of ressources (unfortunately). But since installing KDE Plasma 5.27.8 I experience an immense lagginess. I first thought, that this was a problem with Obsidian.md, but than I noticed, that the RAM usage stays the same even without Obsidian running. This persists and gets even worse after standby (it acutally stands - without little temporal changes - at 20.2 GB. 

Only way to fix it (temporarily): restart system.

htop reports 
10.7G VIRT, 833M RES, 290MSHR for plasmashell -- no-respawn (about 30 processes)
5329MB VIRT, 71936M RES, 55040 SHR for QtWebEngineProcess (about 10 processes)

KDE Systemmonitor reads about 630 MiB RAM usage for plasmashell ... 

I don't understand what's going on here, I'm not a IT-Systemsengineer, but this does not seem right!

STEPS TO REPRODUCE
1. work with some heavy load productive systems
2. Go to standby mode
3. reactivate system ...

OBSERVED RESULT

severe lagginess of productive programs

EXPECTED RESULT

Swift working of the system, as it was until 5.27.7 ...

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux:  6.5.3-1-default
(available in About System)
KDE Plasma Version: 5.27.8
KDE Frameworks Version:  5.110.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION
By the way: why is it necessary, that the calendar reminder of Akonadi constantly uses more than 930 MiB of Ram in idle ???
Comment 1 Nate Graham 2025-01-15 19:06:42 UTC
Sorry we were not able to get to this yet. Is it still happening in a recent version of Plasma, like 6.2.5 or later?
Comment 2 Bug Janitor Service 2025-01-30 03:47:20 UTC
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2025-02-14 03:46:49 UTC
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.