Re: subsystem vs shared pools

That I knew.

Rob Berendt
-- IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail to: 2505 Dekko Drive Garrett, IN 46738 Ship to: Dock 108 6928N 400E Kendallville, IN 46755 http://www.dekko.com -----Original Message----- From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Vernon Hamberg Sent: Friday, February 7, 2020 4:54 PM To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx> Subject: Re: subsystem vs shared pools CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. The "2" and "3" mean that QBATCH uses 2 machine pools, *BASE and *SHRPOOL1, IIRC. A subsystem can be running stuff in more than one machine pool. Those numbers are the pool IDs from WRKSYSSTS On 2/7/2020 2:31 PM, Rob Berendt wrote:

By "batch jobs" I did not take that to only mean QBATCH. That being said, I did check out the routing entries for the QBATCH subsystem. Should any of these be pointing to subsystem pool 1, which ends up being *BASE?
Start
Seq Nbr Program Library Compare Value Pos Pool
15 QCMD QSYS 'QIGC' 1 1
300 QCMD QSYS 'QS36EVOKE' 1 2
500 AMZPBJ AMALIBA 'AAMAPICSDB1' 69 1
700 QCL QSYS 'QCMD38' 1 2
9999 QCMD QSYS *ANY 2

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com


-----Original Message-----
From: MIDRANGE-L<midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Friday, February 7, 2020 3:21 PM
To: Midrange Systems Technical Discussion<midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: subsystem vs shared pools

WRKSBS
Sbs Pools
Subsystem 1 2
PMEDH 2 Quick-EDD (H/A)
QBATCH 2 3
QCMN 2
QCTL 2
QHTTPSVR 2
QIDRJW 2
QINTER 2 5
QSERVER 2
QSPL 2 4
QSYSWRK 2
QUSRWRK 2
Q1ABRMNET 2
ZHALPROD 2 Halcyon Messenger Plus

At this time little web serving is being done. Mostly ADMIN. Some jobs in there for Infor's Webtop but I don't think it is being used at all.

When a job says:
Subsystem . . . . . . . . . . . . . . . . . : QBATCH
Subsystem pool ID . . . . . . . . . . . . : 2
This means it is running in subsystem pool 2, which is system pool 3 which is *SHRPOOL1, right?

Defined Max Allocated Pool
Pool Size (M) Active Size (M) ID
*MACHINE 7262.97 +++++ 7262.97 1
*BASE 40964.66 7987 40964.66 2
*INTERACT 67607.35 2863 67607.35 5
*SPOOL 1331.03 87 1331.03 4
*SHRPOOL1 15937.97 558 15937.97 3
*SHRPOOL2 11796.46 512
*SHRPOOL3 25.00 7

Subsystem Jobs
PMEDH 62
QBATCH 2
QCMN 7
QCTL 3
QHTTPSVR 31
QIDRJW 0
QINTER 461
QSERVER 21
QSPL 212
QSYSWRK 218
QUSRWRK 82
Q1ABRMNET 3
ZHALPROD 15

I wonder if we had one or more of these subsystems going to *SHRPOOL2 before but ran into problems and switched it back to *BASE?

>From IBM:
<snip>
All batch processing appears to be running out of the default pool, *BASE. This is not efficient for processing high value jobs, as there is a large contention for memory and activity level resource in the one pool. There is also a mixture of job types which run out of *BASE, so expert cache is not able to effectively tune the memory page size for any particular type of job.
High value jobs should run out of a dedicated assigned pool, a shared pool with expert caching turned on. This will ensure the jobs do not contend for resource, and can run optimally.
</snip>


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

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