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Excessive number of "bioset" kernel processes in 4.4 kernel #1427
Since upgrading to kernel 4.4.7 (and now 4.4.8) on an otherwise stock 2016-03-18-raspbian-jessie-lite I have 25 kernel processes named bioset showing in top output, each with a nice priority of -20, e.g.:
This happens on an RPi B+, RPi2 and RPi3, all run headless. As I didn't see this on the 4.1 kernel, am I to assume this is not desired behaviour?
Seems like a kernel working thread involved in block I/O. See:
I don't think there is any issue. It takes no CPU when it is not in use.