I *hope* other filesystems don't do this nonsense. Good thing I'm getting rid of XFS. I used to think it was a good filesystem, but this behavior is reason enough for me to never use it again for anything serious.
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Well this is some pathological fail. Turns out XFS can block on I/O when trying to reclaim inode caches. This means that with a machine with gigabytes of free RAM (used for FS caches), busy I/O escalates to massive latency spikes for *everything*, even things that don't do I/O.pic.twitter.com/CtJKhFrKbr
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A simple drop_caches fixes the massive latency spikes on allocation (until the page cache grows to use all free RAM again, of course). This is obviously broken. Ugh.
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apfs did this on my laptop too when I deleted a very large chunk of files a few days ago, the entire system just froze and latency went sky high
Thanks. Twitter will use this to make your timeline better. UndoUndo
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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I can't seem to find where you reported your concerns to the XFS developers on the public mailing list. Did you?
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I didn't, but someone else found it at the same time and filed a bug referencing the tweet and ultimately nothing was done
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