EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>

Subject: Re: Odd problems with RHEL6 diskless machines
From: Ralph Lange <[email protected]>
To: EPICS Tech-Talk <[email protected]>
Date: Wed, 24 Jul 2013 18:24:55 +0200
On 24.07.2013 17:33, Andrew Johnson wrote:
> [...]
> Does this have anything to do with devIocStats [...] the old VxStats
> module on vxWorks has a lowest-priority idle thread [...].
>
> Take a look at the internals of devIocStats, and if it has such an
> idle task try disabling it (it should be asking the OS instead of
> trying to measure it anyway).

vxWorks is the *only* system where devIocStats uses this idle-thread
method. On all other systems, it uses the OS supplied mechanism to find
the CPU usage.

~Ralph

References:
Odd problems with RHEL6 diskless machines tom.cobb
Re: Odd problems with RHEL6 diskless machines Andrew Johnson

Navigate by Date:
Prev: RE: Odd problems with RHEL6 diskless machines tom.cobb
Next: RE: fsmRecord Initial State Costello, Charles C.
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: RE: Odd problems with RHEL6 diskless machines tom.cobb
Next: motor record: continuously update limit switches Konrad, Martin
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  <20132014  2015  2016  2017  2018  2019  2020  2021  2022  2023  2024 
ANJ, 20 Apr 2015 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·