| Summary: | ksgrd_network_helper maxes out an entire CPU thread while qBittorrent is running | ||
|---|---|---|---|
| Product: | [Applications] ksysguard | Reporter: | Nicolas F. <kdebugs> |
| Component: | ksysguard | Assignee: | KSysGuard Developers <ksysguard-bugs> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | bugseforuns |
| Priority: | NOR | ||
| Version: | 5.17.5 | ||
| Target Milestone: | --- | ||
| Platform: | Compiled Sources | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Attachments: | flamegraph of the ksgrd_network_helper process, captured with a 99 Hz interval for 60 seconds. | ||
I noticed this problem on Arch Linux a few weeks ago while downloading a file with JDownloader. Download with internet browsers does not cause high cpu usage. I do not use tunnelling through wireguard. *** This bug has been marked as a duplicate of bug 414094 *** |
Created attachment 125154 [details] flamegraph of the ksgrd_network_helper process, captured with a 99 Hz interval for 60 seconds. ksgrd_network_helper sits at full usage of one logical CPU core if qBittorrent is running in the background. If one closes qBittorrent, the CPU usage of ksgrd_network_helper drops. STEPS TO REPRODUCE 1. Launch ksysguard 2. Launch qBittorrent with some torrents 3. Look at the CPU usage of ksgrd_network_helper OBSERVED RESULT Ridiculously high CPU usage because it presumably scales badly with the number of connections an application makes. EXPECTED RESULT Developer realises that more network applications than just web browsers exists and uses appropriately scaling algorithms. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Linux 5.4.8 / Plasma 5.17.5 (available in About System) KDE Plasma Version: 5.17.5 KDE Frameworks Version: 5.65.0 Qt Version: 5.14.0 ADDITIONAL INFORMATION I'm tunnelling through wireguard while doing this, but I'm not sure if it matters at all.