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

Alexander Best arundel at
Mon Feb 7 18:40:17 UTC 2011

On Mon Feb  7 11, O. Hartmann wrote:
> Hello.
> 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).

i don't think the states are documented anywhere, except maybe in the source
code itself.

you might find this video helpful though [1].



> Any help?
> Thanks in advance, and regards,
> Oliver


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