Re: "Stalling"

[DAsmussen@xxxxxxx]

Chris,

In a message dated 97-05-04 04:04:35 EDT, you write:

> 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. 

I would appreciate any insight into this as well.  I never noticed it until
today when we ran our first Production run of our BPCS shop order purge
program.  We're on a maxed-out 320 with the latest CUM of OS/400 3.1.01.
 This program incorporates a command utility that I wrote that performs
DSPPGMREF on all programs in the series to an outfile, then performs a SAVOBJ
to a SAVF for any file open for update or output.

By chance, a file required for the series didn't get promoted to the
production machine and I had to start and keep an eye on it manually.  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 files,
and opens THIRTY of them.  After the SAVOBJ completed, the job still took
less than 1% CPU with nobody on the system -- after I bumped the priority up
to 20!  This job should DEVOUR resources, yet received little.  What's up
with that?

TIA,

Dean Asmussen
Enterprise Systems Consulting, Inc.
Fuquay-Varina, NC  USA
E-Mail:  DAsmussen@AOL.COM

"If a friend won't lend you fifty dollars, he's probably a close friend." --
Anonymous
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