SCHED_ULE bug (was Re: cpuminer mines only on one core regardless of "--threads" option)

[Andrey Chernov]

On 14.01.2014 17:01, Alexander wrote:
> on Freebsd 9.2 x64 on 5 different PCs I installed net-p2p/cpuminer
> from ports and by "pkg install" - result is the same - minerd mines
> only on one core regardless of "--threads" option.
...
> # top -P
> CPU 0:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> CPU 1:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> CPU 2:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> CPU 3:  0.0% user,  100% nice,  0.0% system,  0.0% interrupt,  0.0% idle

This is SCHED_ULE bug, I see _all_ processes (not minerd only in
particular) stuck to the last CPU too (top's 'C' column is equal to the
last CPU and never changes), latest -stable i386. It disappears for me
switching to SCHED_4BSD.