Re: dispatched cpu sharing/waiting ?

Maybe you can try checking ALL your waits so you can find a global solution and free some CPU resources.

Try with PDI or try with the script from my LinkedIn post (sorry, it's in spanish):

http://bit.ly/2kYT47r

Then you can open CPUWAITOVR.csv with Excel (or GNumeric) and create a normalized chart like this:

In this chart you can see where's your CPU processing time being used with some grouping (not the 32 wait buckets, but groups of them).

So... let's say 2018-05-10 : we have almos 60% of the time spent on Lock Contention, with some Disk time spikes.

Then, you can pick the DSKWAITOVR.csv and do something similar:

Disk writes and Page Faults are using most of disk time


...and LCKWAITOVR.csv

Lock waits comes from Database Record Locks an some Seize contention (OS)



El 24/7/18 a las 15:29, Steinmetz, Paul escribió:

< In short the CPU is overloaded and you have CPU wait states.

We had an issue years back with a batch job communicating with a remote server.
MPG Job Wait Details showed most of the time was in CPU dispatch and queuing.
Our CPU was not overloaded.
We never really solved the issue, but did determine the issue was with the remote server.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Tuesday, July 24, 2018 3:57 PM
To: Midrange Systems Technical Discussion
Subject: Re: dispatched cpu sharing/waiting ?

In short the CPU is overloaded and you have CPU wait states.

Dawn May did a nice set of articles regarding wait states before she left
IBM for private practice.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects

On Tue, Jul 24, 2018 at 12:00 PM, Steurbaut, Richard <
rsteurbaut@xxxxxxxxxxxxxxxxxx> wrote:

Hello, We have a job that is running longer and shows a good amount of time
being spent in dispatched cpu sharing/waiting. Would anyone be able to
explain what dispatched cpu sharing/waiting means. Thanks !
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