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Thread: Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

  1. #1

    Question Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

    I wonder about the system behaviour of the software “MozillaFirefox 65.0.1-1.3” since recent updates.
    The opened documents are not immediately displayed in the way I was used to for a while. The tabs present empty windows.
    If I inspect the corresponding subprocesses by the program “strace”, I get information like the following.

    Code:
    …
    openat(AT_FDCWD, "/usr/share/fonts/texlive-…/….pfb", O_RDONLY) = 257
    …
    Would you like to clarify any data processing difficulties around such software components?

  2. #2
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    Default Re: Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

    I'm not sure that's a problem.

    It is not unusual for firefox to be accessing fonts. And if you have some texlive fonts on your system, I suppose it could use those.
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  3. #3

    Question Re: Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

    Quote Originally Posted by nrickert View Post
    It is not unusual for firefox to be accessing fonts.
    • I agree that font data are required for the graphical display of text information.
    • My observation of read accesses for font files from the software distribution “TeX Live” during a few program traces might distract from other difficulties in the current software combination.
    • May I expect readable contents from HTML documents within a few seconds instead of wondering about blank windows still after several minutes?

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    Default Re: Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

    Quote Originally Posted by elfring View Post
    May I expect readable contents from HTML documents within a few seconds instead of wondering about blank windows still after several minutes?
    I seem to recall noticing a bug report or a factory mailing list message about font problems slowing firefox. So this is probably being investigated.
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  5. #5

    Question Re: Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

    Quote Originally Posted by nrickert View Post
    So this is probably being investigated.
    Do I need to add my observation about insufficient program execution speed (responsiveness) to any other issue tracker?
    Would you like to share any more experiences for corresponding software profiling?

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    Default Re: Questionable behaviour by Firefox 65.0.1 because of data processing for fonts?

    This appears to be the related bug report:

    Bug 1124816 - Firefox freezes intermittently burning 100% CPU due to fontconfig 2.13.1-1.1 update

    It is currently marked as "In progress". It might be worth taking a look. And you can add a comment if you think that is appropriate.

    Personally, I do most of my browsing on Leap 15.0, which maybe why I have not noticed the issue.
    openSUSE Leap 15.1; KDE Plasma 5;
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