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PEFORM on TSO Logon Screen

 
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Vishwamurthy

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Joined: 11 Mar 2008
Posts: 57
Location: India

PostPosted: Wed Jun 03, 2009 4:54 pm    Post subject:
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When I try to login, I find a screen like the one below

When you log in:
Code:

Enter LOGON parameters below:                   RACF LOGON parameters:
                                                                     
Userid    ===> YOURID                                                 
                                                                     
Password  ===>                                  New Password ===>     
                                                                     
Procedure ===> $TSOPROC                   Group Ident  ===>     
                                                                     
Acct Nmbr ===> AB123                                                 
                                                                     
Size      ===> 8192                                                   
                                                                     
Perform   ===>                                                       
                                                                     
Command   ===>


What does

Code:

Perform   ===> 


exactly do?

Till today, I have always left it blank
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Robert Sample

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Joined: 06 Jun 2008
Posts: 8124
Location: East Dubuque, Illinois, USA

PostPosted: Wed Jun 03, 2009 5:13 pm    Post subject:
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Since you seem to have trouble finding PF1 on your keyboard, I found it for you and voila got
Code:
 PERFORMANCE GROUP

        This value will be an integer from 1 to 255.  When your userid
        was defined to TSO, your installation may have authorized
        performance group values for you.  If your installation did not,
        entering a value will have no effect on your TSO session.
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Vishwamurthy

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Joined: 11 Mar 2008
Posts: 57
Location: India

PostPosted: Wed Jun 03, 2009 5:39 pm    Post subject:
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Okay. But what is the difference in my belonging to Performance Group 1 or 255?
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expat

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Joined: 14 Mar 2007
Posts: 8593
Location: Back in jolly old England

PostPosted: Wed Jun 03, 2009 5:41 pm    Post subject:
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Ask your systems programmers / capacity & performance people who actually set the attributes of the values.
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10278
Location: italy

PostPosted: Wed Jun 03, 2009 5:42 pm    Post subject: Reply to: PEFORM on TSO Logon Screen
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performance group definitions are site specific

if You are allowed to specipfy one, somebody should have told You
what to specify and why

for details of systems workings
search the IBM redbooks for ....

ABC of System Programming ( s390 )
vol01 sg245597.pdf
vol02 sg245652.pdf
vol03 sg245653.pdf
vol04 sg245654.pdf
vol05 sg245655.pdf

ABC of System Programming ( zOS )
vol01 sg246981.pdf
vol02 sg246982.pdf
vol03 sg246983.pdf
vol05 sg246985.pdf
vol06 sg246986.pdf
vol07 sg246987.pdf
vol08 sg246988.pdf
vol09 sg246989.pdf
vol10 sg246990.pdf
vol11 sg246327.pdf

zOS basics
vol01 sg246366.pdf
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Vishwamurthy

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Joined: 11 Mar 2008
Posts: 57
Location: India

PostPosted: Wed Jun 03, 2009 5:44 pm    Post subject:
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Thanks enrico..Robert and Expat icon_smile.gif.
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Robert Sample

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Joined: 06 Jun 2008
Posts: 8124
Location: East Dubuque, Illinois, USA

PostPosted: Wed Jun 03, 2009 5:46 pm    Post subject:
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Note the last sentence of the help screen I posted. Almost no sites are using performance groups these days with the switch to WLM. As stated earlier by expat and enrico, if the value can be specified at your site, the precise value required is site specific and you must contact your site support group to find out what, if anything, to put in the field.
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