Program control is an extended attribute bit in the directory. 
 
"Establishing Program Control in HFS" 
<http://publib.boulder.ibm.com/infocenter/zos/v1r12/index.jsp?topic=%2Fcom.ibm.zos.r12.ceqa100%2Fceqa1a1023.htm>
   
 
 
 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Mark Jacobs
Sent: Tuesday, May 22, 2012 9:56 AM
To: [email protected]
Subject: Re: XPLINK Modules in SCEERUN2


 From the Ported Tools - OpenSSH Manual

Setting up the XPLINK environment for use by IBM Ported Tools for z/OS: 
OpenSSH

        Description: Beginning in Version 1 Release 2, IBM Ported Tools 
for z/OS:
        OpenSSH is an XPLINK application. XPLINK (Extra Performance 
Linkage) is a
        type of call linkage that can improve performance in an 
environment of frequent
        calls between small functions.
        Is the migration action required? Yes, to ensure optimal 
performance.
        Steps to take: To set up the XPLINK environment (that is, to 
initialize the
        resources necessary to run an XPLINK application), take the 
following steps:
        * Put the Language Environment(r) run-time library SCEERUN2 in the 
LNKLST
           member of SYS1.PARMLIB.
        * Put the XPLINK modules in SCEERUN2 in the dynamic LPA.
        * Mark the run-time library SCEERUN2 as program controlled.

I've verified that two of the three are done, can't find anything on the 
third.

Mark Jacobs

On 05/22/12 10:35, Mark Zelden wrote:
> On Tue, 22 May 2012 10:13:04 -0400, Mark Jacobs<[email protected]>  
> wrote:
>
>    
>> I've looked and looked, and looked again, but can't find it. What are
>> the recommended XPLINK modules from SCEERUN2 that should be added to
>> dynamic LPA for performance reasons?
>>
>>      
> This may be a stupid question, but how do you know that there is a 
> recommendation
> to do so if you can't find any documentation on it?   Also, even though you 
> may not
> be constrained in 31-bit private, is your usage enough to worry about it?  
> You would
> still get LLA and potentially VLF benefits without being in LPA.
>
> Regards,
>
> Mark
> --
> Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS
> mailto:[email protected]
> Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html
> Systems Programming expert at http://expertanswercenter.techtarget.com/
>
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>
>    


-- 
Mark Jacobs
Time Customer Service
Tampa, FL
----

The Doctor: You know when grown-ups tell you everything's going to be
fine, and you think they're probably lying to make you feel better?
Young Amy: Yes.
The Doctor: Everything's going to be fine.

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