top: where to find process state descriptions (i.e. STATE usem)?

Lowell Gilbert freebsd-questions-local at
Mon Feb 7 18:56:03 UTC 2011

"O. Hartmann" <ohartman at> writes:

> Try to find docs about the process states shown in top, but I can't
> find any hint for explanations what the abbrev. do mean.


> I have a problem with a scientific program using OpenMP showing STATE
> usem' in top. Problem: the small program is much slower on a dual or
> four core CPU using OpenMP than using only a single core (single
> thread never show state 'usem' in top).

Sorry, I've never run into that, and can't find it in the source...

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