https://bugs.kde.org/show_bug.cgi?id=469279
Bug ID: 469279
Summary: Running akonadi servers easily doubles or triples VRAM
usage
Classification: Frameworks and Libraries
Product: Akonadi
Version: 5.23.0
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kdepim-b...@kde.org
Reporter: k...@kaishome.de
CC: c...@carlschwan.eu
Target Milestone: ---
SUMMARY
After a long time, I wanted to give Akonadi a new chance and installed it.
After some time I noticed much worse gaming performance related to VRAM
pressure. I've monitored nvidia-smi to see that my idle desktop now uses 3.8 GB
of VRAM, with a lot of akonadi resource processes allocating 4 MB each from the
driver directly but also the Xorg process was ballooned up to 2.7 GB of VRAM
usage even after a fresh reboot.
Usually, after reboot, Xorg would use around 800 MB of VRAM with some
background processes having 4 MB allocated each, result in around 1.2 GB of
VRAM usage for a freshly booted desktop, and up to 2.5 GB after some time of
use (that's still a lot but a different concern).
STEPS TO REPRODUCE
1. Install akonadi
2. Reboot
3. Observe nvidia-smi output after fresh boot and after some time of use
OBSERVED RESULT
Over 3 GB of VRAM usage after a fresh boot, increasing to almost 5 GB after
some time of use.
EXPECTED RESULT
Stay below 2.5 GB of VRAM with some web browser windows open and Steam running.
SOFTWARE/OS VERSIONS
Operating System: Gentoo Linux 2.13
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9
Kernel Version: 6.1.26-gentoo (64-bit)
Graphics Platform: X11
Processors: 20 × 12th Gen Intel® Core™ i7-12700K
Memory: 31.1 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3080 Ti/PCIe/SSE2
Manufacturer: ASRock
Product Name: Z690 Pro RS
# equery l nvidia-drivers
* Searching for nvidia-drivers ...
[IP-] [ ] x11-drivers/nvidia-drivers-525.116.03:0/525
ADDITIONAL INFORMATION
Dual-monitor setup with "force full composition pipeline" enabled in
nvidia-settings.
nvidia-smi without akonadi running:
Tue May 2 19:33:30 2023
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 525.116.03 Driver Version: 525.116.03 CUDA Version: 12.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ... Off | 00000000:01:00.0 On | N/A |
| 0% 48C P5 46W / 370W | 2494MiB / 12288MiB | 30% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 1625 G /usr/libexec/Xorg 1734MiB |
| 0 N/A N/A 2328 G /usr/bin/kwin_x11 149MiB |
| 0 N/A N/A 2329 G /usr/bin/ksmserver 4MiB |
| 0 N/A N/A 2331 G /usr/bin/kded5 4MiB |
| 0 N/A N/A 2509 G /usr/bin/plasmashell 180MiB |
| 0 N/A N/A 2570 G ...de-authentication-agent-1 4MiB |
| 0 N/A N/A 2573 G ...ec/xdg-desktop-portal-kde 4MiB |
| 0 N/A N/A 2680 G /usr/bin/python3.10 4MiB |
| 0 N/A N/A 2684 G ...lib64/libexec/kdeconnectd 4MiB |
| 0 N/A N/A 2685 G /usr/bin/kleopatra 4MiB |
| 0 N/A N/A 2686 G /usr/bin/keepassxc 4MiB |
| 0 N/A N/A 2698 G /usr/bin/kaccess 4MiB |
| 0 N/A N/A 2702 G .../libexec/DiscoverNotifier 4MiB |
| 0 N/A N/A 3942 G ...aw,WebRTCPipeWireCapturer 88MiB |
| 0 N/A N/A 3945 G /usr/bin/kwalletd5 4MiB |
| 0 N/A N/A 4159 G ...b64/libexec/kf5/klauncher 4MiB |
| 0 N/A N/A 4301 G ...-browser-integration-host 4MiB |
| 0 N/A N/A 6838 G ...veSuggestionsOnlyOnDemand 108MiB |
| 0 N/A N/A 7318 G /usr/bin/krunner 13MiB |
| 0 N/A N/A 7386 G ...lib64/libexec/baloorunner 4MiB |
| 0 N/A N/A 7744 G /usr/bin/konsole 4MiB |
| 0 N/A N/A 1094333 G ...e/Steam/ubuntu12_32/steam 8MiB |
| 0 N/A N/A 1094620 G ...buntu12_64/steamwebhelper 43MiB |
+-----------------------------------------------------------------------------+
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