Re: "Stalling"

DAsmussen@aol.com wrote:
> > Occasionally, the machine will "stall". Their will be plenty of jobs
> >  sitting in batch, but all of them will be getting zero CPU. Even with the
> >  CPU utilization at <1%. Just as there is nothing apparently starting the
> >  stall, it appears to end for no reason.
 During
> the SAVOBJ portion, the job had a status of EVTW and zero CPU.  ZERO CPU
> during a SAVOBJ??!!  The program also has INTENSIVE SQL against large 

Dean,

        My saves normally do not show any CPU utilization when doing a
WRKACTJOB.  Just look at the total at the top of the screen and you will
notice.

        I have a 320 as well with v3r2 and I had a similiar stalling problem a
couple times last week during the day.  CPU lights were pegged as usual
during monthend but there were at least two instances where my
interactive display would just hang.  One of the two times was on the
console doing a WRKACTJOB.  It took about 60 seconds to return
anything.  I checked QSYSOPR msgq and nothing.  When the WRKACTJOB
returned, it did not show any one job chewing things up.  I have noticed
that things would hang like this if a device receives an I/O problem but
the problem gets reported to QSYSOPR.    Batch was slow as "Christmas"
and batch jobs seemed to run longer than normal.  Especially queries. 
There was one that I had to kill Wednesday night after it sat active for
7+ hours.  Granted some of the queries we have are pigs and take a while
but not that long.  It generated absolutely nothing for the report.

        As usual on the weekend after monthend, I performed a reclaim storage
and IPL cycle.  I currious to see if this problem gets revisited again
this week.  June's month end will fall on a week day.  Just for the heck
of it and if I remember, I'm going to perform an IPL and reclaim storage
the weekend before and see if everything runs slow again.

Danny Mc?


---
Danny Mc?
E-mail:    dcmcques@vantek.net
 or Click: mailto:dcmcques@vantek.net
Web Page:  http://www.vantek.net/pages/dcmcques/index.html

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