RCT entry sequence

[login to unmask email]

RCT entry sequence
Okay listers, I have a performance question.

I am in the process of cleaning up our RCT's for our CICS(4.1) regions and
I am wondering.

Does the sequence of the RCT entries make any difference in the response
time of the transaction.

Should I keep the entries with more usage at the beginning of the RCT and
the seldom used entries at the en of the RCT?

TIA
Carol Sutfin
Corporate DBA
AmSouth Bank
(205)326-5214 Fax:(205)326-5613
[login to unmask email]



Cindy Andersen

Re: RCT entry sequence
(in response to Max Scarpa)
Yes, it searches sequentially, so keep highest used entries first.

> -----Original Message-----
> From: [login to unmask email] [SMTP:[login to unmask email]
> Sent: Wednesday, January 09, 2002 8:58 AM
> To: [login to unmask email]
> Subject: RCT entry sequence
>
> Okay listers, I have a performance question.
>
> I am in the process of cleaning up our RCT's for our CICS(4.1) regions and
> I am wondering.
>
> Does the sequence of the RCT entries make any difference in the response
> time of the transaction.
>
> Should I keep the entries with more usage at the beginning of the RCT and
> the seldom used entries at the en of the RCT?
>
> TIA
> Carol Sutfin
> Corporate DBA
> AmSouth Bank
> (205)326-5214 Fax:(205)326-5613
> [login to unmask email]
>
>
>
>
>



Harvey Puckett

Re: RCT entry sequence
(in response to csutfin@AMSOUTH.COM)
there is no gold to be mined in this creekbed ... do you have a particular CICS-DB2 performance problem <like response time>? If not, enjoy. If so, let's hear it. Are you using WLM Goal mode? etc ...

Cleaning up the macro should include looking for thread reuse opportunites and pool exploitation ... which usually results in performance gains.

Tell us more.

>>> [login to unmask email] 01/09/02 09:58AM >>>
Okay listers, I have a performance question.

I am in the process of cleaning up our RCT's for our CICS(4.1) regions and
I am wondering.

Does the sequence of the RCT entries make any difference in the response
time of the transaction.

Should I keep the entries with more usage at the beginning of the RCT and
the seldom used entries at the en of the RCT?

TIA
Carol Sutfin
Corporate DBA
AmSouth Bank
(205)326-5214 Fax:(205)326-5613
[login to unmask email]






Mike (M.) Polley

Re: RCT entry sequence
(in response to Harvey Puckett)
Haven't worked with this in awhile, but from what I recall, I say No, because there are other parameters such as dpmode, twait, tclass, that will aid in thread utilization. Also you might want to review thrdm, thrda and thrds. HTH.

-----Original Message-----
From: [login to unmask email] [mailto:[login to unmask email]
Sent: Wednesday, January 09, 2002 9:58 AM
To: [login to unmask email]
Subject: RCT entry sequence


Okay listers, I have a performance question.

I am in the process of cleaning up our RCT's for our CICS(4.1) regions and
I am wondering.

Does the sequence of the RCT entries make any difference in the response
time of the transaction.

Should I keep the entries with more usage at the beginning of the RCT and
the seldom used entries at the en of the RCT?

TIA
Carol Sutfin
Corporate DBA
AmSouth Bank
(205)326-5214 Fax:(205)326-5613
[login to unmask email]






Max Scarpa

Re: RCT entry sequence
(in response to Mike (M.) Polley)
Hi Carol

AFAIK and according our CICS syprog the answer is no, you've to use CICS
statements to gain performance advantage
(DPMODE etc).

There are some paper dealing with DB2 and CICS performance, I've 2 short
articles about it. If needed let me know....

Max Scarpa
Useless (not yet homeless) 31-bit DB2 sysprog