Yes, we implemented it several years ago. Our default Dataclas for VSAM
files contains:
Data Set Name Type . . . . . : EXTENDED
If Extended . . . . . . . . : REQUIRED
Extended Addressability . . : YES
Record Access Bias . . . . : SYSTEM
System Managed Buffer . . . :
System Determined Blocksize : YES
We do not specify a value in the SMB field.
We could see performance improved, but I don't recall (and didn't
document, apparently) what the measured improvement was.
Greg Shirey
Ben E. Keith Co.
-----Original Message-----
From: IBM Mainframe Discussion List On Behalf Of Tobias Cafiero
Sent: Tuesday, September 14, 2010 11:44 AM
Subject: DFSMS and System Managed Buffering
Hello,
I'm testing the SMB option in the DFSMS DATACLS Constructs, but
don't
yet see a performance boost as promised. At this point I'm using just a
del/define,repro and pointing to the SMB DATACLS. The DATACLS is
extended
and contains the following values:
Record Access Bias . . . . : SYSTEM
System Managed Buffer . . . : 1M
The STORCLS is our standard non-striped type. Has anyone implemented SMB
on their system.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
