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Thread: Slow hard disk i/o ext4 + luks Tumbleweed

  1. #1

    Default Slow hard disk i/o ext4 + luks Tumbleweed

    Whenever files are moved / copied to / from my laptop's hard drive,
    the cpu usage goes up to 100% and top shows very high usage for
    process file.so causing system freezes.

    Is this normal on lvm+luks+ext4 on a hard drive?

    openSUSE Tumbleweed
    64 bit
    Dell Inspiron 5567

  2. #2
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    Default Re: Slow hard disk i/o ext4 + luks Tumbleweed

    I've been using LVM with LUKS and "ext4" for years. And the slowdown seems too small to notice.

    However, if I am copying between the "ext4" file system and an external "ntfs" file system, then that is slower and there is a lot of CPU usage for the "ntfs" file system.

    You mention "ext4" for one side of the copy. You have not mentioned what's on the other side.
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

  3. #3

    Default Re: Slow hard disk i/o ext4 + luks Tumbleweed

    Though I was using ntfs, same happens while copying data
    within the same ext4 partition the system is installed on

    I used expert partitioner during install

  4. #4
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    Default Re: Slow hard disk i/o ext4 + luks Tumbleweed

    I'm not noticing a problem with "ext4" to "ext4".

    Well, okay, if I copy a 4G file (a linux iso), that does take a noticeable time. For small files, I don't see a delay.
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  5. #5

    Default Re: Slow hard disk i/o ext4 + luks Tumbleweed

    If data being copied exceeds a few gigs, the usage shoots up
    This partition is 1.4 TB , I was copying a folder of 25 GBs

    The installer had recommended xfs for /home

  6. #6
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    Default Re: Slow hard disk i/o ext4 + luks Tumbleweed

    Lots of small files takes more resources then one big file of the same size.

    Copy from the command line or a GUI (which)

    luks should not have a big hit but some

  7. #7

    Default Re: Slow hard disk i/o ext4 + luks Tumbleweed

    Same happens when copying files in same partition via cp
    from command line.
    The system is lvm encrypted container which contains / , a data partition
    which has symlinks to xdg directories, and a swap

    Does this need bug reporting? How do I find out what is causing this?

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