SUMMARY With only the plasma browser extension enabled, the browser performance as measured by the speedometer 3.0 benchmark is reduced by 17%. Within reasonable variance this can be observed across multiple of my tested hardware platforms. This reduced performance can be observed in many browser pages and is most easily quantifiable in the speedometer 3.0 benchmark. STEPS TO REPRODUCE 1. install latest firefox 2. run speedometer 3 benchmark and note results 2. install plasma browser extension 3. run speedometer 3 benchmark and note results OBSERVED RESULT 17% performance reduction EXPECTED RESULT no or minimal performance reduction such is the case with many other extensions SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu Noble 24.04 KDE Plasma Version: 5.27.11 KDE Frameworks Version: 5.115.0 Qt Version: 5.15.13
Apart from a synthetic benchmark, is there any user-noticeable impact? I guess the mutation observer we install on the DOM to monitor for video players being added has quite some overhead.