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Thread: Firefox ESR - high CPU load for a minute or two when starting

  1. #1
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    Question Firefox ESR - high CPU load for a minute or two when starting

    Firefox ESR version 52.7.3 -- the standard current openSUSE Leap 42.3 version.

    Is anyone else noticing that, when Firefox is called in a KDE Plasma 5 (KDE Frameworks: 5.32.0) environment, it takes an awful amount of CPU for a minute or two?

    I've taken to opening a Konsole window and with the help of "top", wait until the Firefox process has "calmed down". If I attempt to use Firefox before it has completed it's initialisation, it's extremely unresponsive -- it seems to be better to wait a minute and then begin typing in the first URL of the day …

  2. #2
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    Default Re: Firefox ESR - high CPU load for a minute or two when starting

    Not seeing that with 52.7.3-86.1 on leap, or 52.7.3-3.18 (from http://download.opensuse.org/reposit...SE_Tumbleweed/) on TW.

    At start-up on either utilisation goes to around 100% and rapidly, <2sec, drops to around 2-3% with Firefox idle.

    Tried the usual?

    Gremlins in the (Mozilla) cache ... delete ~/.cache/mozilla

    Temporarily rename ~/.mozilla so as to start with a clean, default Firefox profile.

    Any (mozilla) add ons updated recently that could be the culprit.
    Regards, Paul

    2x Tumbleweed (Snapshot: 20191016) KDE Plasma 5
    2x Leap 15.1 KDE Plasma 5

  3. #3
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    Cool Re: Firefox ESR - high CPU load for a minute or two when starting

    Quote Originally Posted by tannington View Post
    Any (mozilla) add ons updated recently that could be the culprit.
    Yes, indeed!!

    The "culprit" is an add-on by the name of "Ghostery" -- deactivated it -- startup was better -- read "normal" -- deinstalled it -- startup remained "good" -- reinstalled it -- startup went back to "almost as bad as the initial behaviour".

    I'll live with the situation as it is for the moment and have another think about Trackers et al.

    On the other hand, it's always nice to know what the folks who maintain web sights want to know (and collect) about you …
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