Experimental Physics and
Industrial Control System

[email protected] (Jeff Hill) · Wed, 8 Dec 1999 09:48:48 -0700

>
> I have zombie problem at UNIX IOC.
> Pthread is analog of VxWorks task. When IOC receives the request for
> operating with PV,  iocCore spawns the pthreads: "CA event", "CA client".
> Which is completed by "exit()" call or "return ()", this operation
> switches pthread in  zombie state.

On UNIX systems a process is in the "zombie" state when it has exited before
the parent process exits, and the parent has not yet called wait or waitpid
to determine the exit status of the child.

It is difficult to comment further on this because I don't know the LYNXOS
specifics of your port of EPICS iocCore.

The osi based port of iocCore will soon be ready for evaluation on lynxos.

Jeff

> iocCore contains following list of
> pthreads:
>
> __01.)_____tid=51___name=taskwd____PRI=4.
> __02.)_____tid=54___name=cbLow____PRI=16.
> __03.)_____tid=62___name=cbMedium____PRI=16.
> __04.)_____tid=56___name=cbHigh____PRI=16.
> __05.)_____tid=36___name=dbCaLink____PRI=15.
> __06.)_____tid=78___name=ts_Casync____PRI=16.
> __07.)_____tid=48___name=scanOnce____PRI=16.
> __08.)_____tid=77___name=scan1000____PRI=16.
> __09.)_____tid=50___name=scan500____PRI=15.
> __10.)_____tid=55___name=scan200____PRI=14.
> __11.)_____tid=53___name=scan100____PRI=13.
> __12.)_____tid=49___name=scan50____PRI=12.
> __13.)_____tid=31___name=scan20____PRI=11.
> __14.)_____tid=32___name=scan10____PRI=10.
> __15.)_____tid=67___name=CA TCP____PRI=13.
> __16.)_____tid=66___name=CA UDP____PRI=10.
> __17.)_____tid=37___name=CA online____PRI=10.
> __18.)_____tid=68___name=CA client____PRI=12.
> __19.)_____tid=76___name=CA event____PRI=11.
> __20.)_____tid=75___name=CA client____PRI=12.
> __21.)_____tid=74___name=CA event____PRI=11.
> __22.)_____tid=73___name=CA client____PRI=12.
> __23.)_____tid=72___name=CA event____PRI=11.
> __24.)_____tid=71___name=CA client____PRI=12.
> __25.)_____tid=70___name=CA event____PRI=11.
> __26.)_____tid=69___name=CA client____PRI=12.
> __27.)_____tid=38___name=CA event____PRI=11.
> __28.)_____tid=57___name=CA client____PRI=12.
> __29.)_____tid=64___name=CA event____PRI=11.
> __30.)_____tid=63___name=CA client____PRI=12.
> __31.)_____tid=59___name=CA event____PRI=11.
> __32.)_____tid=65___name=CA client____PRI=12.
> __33.)_____tid=58___name=CA event____PRI=11.
> __34.)_____tid=79___name=CA client____PRI=12.
> __35.)_____tid=80___name=CA event____PRI=11.
> __36.)_____tid=81___name=CA client____PRI=12.
> __37.)_____tid=82___name=CA event____PRI=11.
> __38.)_____tid=83___name=CA client____PRI=12.
> ... ...
> But all threads("CA event","CA client") from iocCore has zombie state.
> Would you help me do this problem?
>
>
> Best Regards,
> Tatiana
> ------------------------------------
> Budker Institute of Nuclear Physics
> prospekt Lavrentev  11
> 630090, Novosibirsk, RUSSIA
> fax     +7 3832 342163
> phone   +7 3832 394977
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System