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07_19's avatar
07_19
Iron Contributor
Apr 07, 2020
Solved

High CPU usage because of service worker (sw.js)

Since the last update, almost each time I close a tab, Edge starts to take a lot of CPU.  In the browser task manager, I see that it's the service worker that cause this : it's written either "servi...
  • 07_19's avatar
    07_19
    Apr 09, 2020

    Since the new update (Version 83.0.474.0 (Official build) dev (64-bit) ), I don't have this bug anymore. 

Thraetaona's avatar
Thraetaona
Iron Contributor
Apr 07, 2020

07_19 

 

You could check edge://serviceworker-internals/ for a detailed list of active service workers.

 

To (temporary) disable a service worker you could press 'F12' to open Devtools and navigate to the 'Application' Tab.  Under the 'Application' section there is an entry called 'Service Workers' in which you can unregister specific workers associated with certain sites.

 

Beware that upon visiting the same sites new Service Workers could be installed again and some are able to run offline.

 

 

To permanently prevent sites from installing service workers you could either disable cookies (Globally or just for a single site) or disable JavaScript completely, the latter may cause issues with most sites.

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