Re: Managing performance collection objects -- MIDRANGE-L

In my view, it's the IBM answer, it depends.....

When we do performance studies we like to have at least 21 days of
collections. Preferably over month end so we pick up month end workload as
well as normal workload. Then the question becomes are there any special
processes that you run periodically that would not be captured in the 21
day list we use?

We had one customer that held off running the MRP because they did not want
to affect the performance data, yet, in the end that's exactly where the
problem was. So I guess you want it to be long enough that you capture all
the potential pain points.

Since you use VTL for backup, we set up one tape to hold the collections
and back them up daily appending to that tape. We do not back up the
performance data with the daily backups for the applications. That way you
have one tape that has all your performance data on it if needed in a DR
situation but you can restore it later if needed.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects

On Mon, Apr 11, 2022 at 11:38 AM Rob Berendt <rob@xxxxxxxxx> wrote:

What are the recommended values on CFGPFRCOL?
I have:
Default interval . . . . . . . . INTERVAL 05.00
Collection library . . . . . . . LIB QPFRDATA
Default collection profile . . . DFTCOLPRF *STANDARDP
Cycle time . . . . . . . . . . . CYCTIME 000000
Cycle interval . . . . . . . . . CYCITV 24
*MGTCOL retention period: RETPERIOD
Number of units . . . . . . . 00120
Unit of time . . . . . . . . . *HOURS
Enable system monitoring . . . . ENBSYSMON *NO
Create historical data . . . . . CRTPFRHST *YES
Create standard database files CRTDBF *YES
Create standard summary data . . CRTPFRSUM *NONE

Historical data interval . . . . HSTITV 60.00
Historical summary retention . . HSTSUMRET 0000000012
Create historical detail data . CRTHSTDTL *YES
Historical detail retention . . HSTDTLRET 0000000007
Historical detail data filter . HSTFILTER 0000000020

Standard data retention (days) STDDTARET 0000000010
System monitor data retention . SYSMONRET 0000000002

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
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-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob
Berendt
Sent: Monday, April 11, 2022 11:34 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: Managing performance collection objects

Thank you for that command.

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 7310 Innovation Blvd, Suite 104
Ft. Wayne, IN 46818
Ship to: 7310 Innovation Blvd, Dock 9C
Ft. Wayne, IN 46818
http://www.dekko.com

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of
Marc Rauzier
Sent: Monday, April 11, 2022 11:03 AM
To: midrange-l@xxxxxxxxxxxxxxxxxx
Subject: Re: Managing performance collection objects

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Le 11/04/2022 à 16:48, Rob Berendt a écrit :

Noticed space on a smaller system really creeping up.
RTVDSKINF followed by PRTDSKINF RPTTYPE(*LIB) OBJ(*ALL) MINSIZE(99999)

was showing that our biggest library was QPFRDATA at about 62G

Many of these *MGTCOL and *CSFILE objects were rather dated.
Isn't there some configuration to say purge these off automatically?

Did you check CFGPFRCOL command?
https://www.ibm.com/docs/en/i/7.4?topic=ssw_ibm_i_74/cl/cfgpfrcol.htm
Setting up *MGTCOL retention period (RETPERIOD) and Standard data
retention (days) (STDDTARET) might help. Notice that data files cleaning
is done on a member basis (one member per collection in each of the
files), while collections cleaning is done on an object basis (one
object per collection).

Right now I'm using DLTPFRCOL COLTYPE(*ALL) which stops and allows you

to select.

Tried Knowledge Center. Nice flowing words but zero detail athttps://

www.ibm.com/docs/en/i/7.4?topic=services-managing-collection-objects

Like, where do you even find this "Properties" page?

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