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03285 - *BASE Activity level?
CPI1466 during Backup SUBST_MERGE_LIST - merge external lists to one complete list with #if... logic for R3upThis documentation is copyright by SAP AG.
*BASE Activity level?
Hello All,I have found that by following what Ron suggests, I decrease the wait time
that a WP experiences and improve my database response.
Best regards,
Alan
-----Original Message-----
From: Schmerbauch, Ron
To: sap400Zm...
Sent: 9/26/01 10:24 PM
Subject: Re: *BASE Activity level?
If you press F1 when the cursor is sitting on the MaxActive text, you'll
get to see what the OS meaning of this value is, and it seems like you'd
want it set pretty high. Unfortunately, the DB also uses it. They
divide
the available memory by this number to determine what a "fair share" of
memory for a job should be...so setting it low seems like a good thing.
To satisfy both needs, you should set this value as low as
possible(favoring DB), without making the Act->Inel go above 0(the
indicator that you have set it too low). The 1.2x multiplier is ok, in
your case 27, just as long as that Act->Inel stays at 0 at all times.
If QPFRADJ is set to something other than 0, the adjuster tends to raise
the max act value a bit over time, so either set QPFRADJ to 0, or check
MaxActive once in a while to make sure it isn't getting really high.
ps. To any who don't know...to find Act->Inel, Press F21, then set
Expert
mode on WRKSYSSTS.
Ron Schmerbauch 507-253-4880 rschmerbZu...
iSeries 400 - ERP Development - Rochester, MN
Squash <realsquashZy...> on 09/26/2001 02:49:39 PM
To: SAP AS/400 List <sap400Zm...>
cc:
Subject: *BASE Activity level?
I'm having performance issues since my V4R5 upgrade and I noticed that
my
*BASE pool activity
level is set to 500. SAP note 428855 says:
------------------------------
QBASACTLVL:
Activity Level of the *BASE Pool.Generally one or several SAP R/3
systems
are assigned to this
memory pool. The minimum size for this system value is:
QBASACTLVL > 1.2 * (number of work processes of all R/3 Systems)
A too great value causes a heavier paging.A too low value may result in
considerable performance
problems because jobs change into the Ineligible status.
------------------------------
Since I have 22 R/3 work processes that means it should be over about
27,
but 500 sounds very
excessive. I do not know what the value was for sure before the upgrade
(yeah yeah I should have
written it down), but I think it was 500 like it is now. Could this
notes
actually mean the
number of total jobs running on the server?
I am having a problem where I get between 1000 and 2000 non-DB pages,
300-2000 Active -> Wait, and
around 100 non-DB faults in *BASE. This only happens after an R/3 job
hangs and I try to end it
by any means.
Please help! ARGH!
Thanks,
Andy Quaas
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rdisp/max_wprun_time - Maximum work process run time ABAP Short Reference
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