more data: SCHED_ULE+PREEMPTION is the problem

George Mitchell george+freebsd at
Sun Apr 8 18:41:46 UTC 2018

On 04/07/18 10:18, Peter wrote:
> [...]
> B. Findings:
> ------------
> 1. Filesystem
> I could never reproduce this when reading from plain UFS. Only when
> reading from ZFS (direct or via l2arc).
> [...]
My consistent way of reproducing the problem was to run ports/misc/dnetc
while trying to buildworld/buildkernel.  But I was always building on a
UFS partition.  I don't know why your results would be different.
-- George

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