Current and additional information on SHOW VSAMIO

Document created by zeiar01 Employee on Mar 28, 2017
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SHOW VSAMIO is not part of the regular HELP SHOW command output.

 

Nevertheless it is discussed at both these places:

 

--Publication CA Mainframe Network Management Reference Guide (r 12.1)

--DocOps for CA NetMaster Shared Content Library (r12.2)

 

This is the information from the Reference Guide (r12.1):

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VSAM Processing in a Subtask

 

You can nominate VSAM I/O to be performed by a subtask rather than the System Services main task.

This provides increased throughput by overlapping VSAM processing. To nominate a subtask

to perform VSAM I/O, use the VSAMIO JCL parameter.

 

Note: Using a subtask is only useful when there is significant VSAM processing and

you have a multi-CPU machine.

 

You can use the SHOW VSAMIO command to obtain statistics of VSAM processing.

 

Example

 

Following is an example of SHOW VSAMIO command output:

 

(18.51)---------------- Operator Console Services (OCS) -----------------------

show vsamio

N13A10 VSAM I/O MANAGER STATISTICS.

N13A11 MODE: DYNAMIC MOLAP: 20 MBPWAIT: 5 DSTS: 2 DSTM: 0 REQS: 173K

N13A12 TASK REQUESTS COL POL TIMES-POL NOWAIT PSWAIT PENDING

N13A13 MAIN 133K 0 2 1229 111K 11107 –

N13A13 SUB 39491 0 5 1 37542 - 0

N13A14 OLAP M/T S/T N13A15 0 0 7300

N13A15 1 21145 1448

N13A15 2 1229 237

N13A15 3 0 22

N13A15 4 0 2

N13A15 5 0 1

N11907 *END*

==> show vsamio

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Please find the SHOW VSAMIO messages at these locations:

 

(r12.1) https://docops.ca.com/ca-netmaster-shared-content-library/12-1/en/messages/n0x-to-n1x-messages#N0xtoN1xMessages-N13A10

(r12.2) https://docops.ca.com/ca-netmaster-shared-content-library/12-2/en/messages/n0x-to-n1x-messages 

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