The Unclear Impact

The Unclear Impact

I had a systemd timer set up to take a #btrfs snapshot every hour and delete the snapshot taken 25 hours ago (so there are 24 snapshots at all times)

since the last time I upgraded (to #linux 6.1.9), removing the old snapshot pins a CPU thread to 100% with btrfs-cleaner and btrfs-transaction for several minutes, making IO latency (including network) on the system generally terrible

time to figure out what has happened. there isn’t any substantial btrfs change in 6.1.9 compared to 6.1.8, so I’m unsure whether it’s a regression, or just a coincidence and I broke something else blobfoxthonking

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