Monitor CPU usage for CA Datacom/DB MUF using CA SYSVIEW

Products

• SYSVIEW Performance Management

Issue/Introduction

Establish specific thresholds and alerts for the CA Datacom/DB Multi-User Facility (MUF) regions using CA SYSVIEW Performance Management.

This article describes how to modify parmlib members (MVSTHRSH, MVSMON, MVSSTATE) to monitor specific MUF jobnames while maintaining global defaults for other started tasks (STCs).

Environment

• CA SYSVIEW Performance Management
• CA Datacom/DB

Resolution

To monitor the CPU usage of a specific MUF (e.g., jobname PRODMUF), follow these procedures to modify the threshold and monitor definitions.

1. Access the MVSTHRSH parmlib member to define the CPU threshold for the specific MUF. Use the RSCE parameter to target the jobname:

   DEFINE JOBCPUT% RSCE PRODMUF LIMIT 25

    

2. Understand CPU percentage calculations:
   • • JOBCPU%: Represents a percentage of CPU (Max 100%).
       In a 2-CPU environment, a 50% limit equals the use of one entire CPU.
       In a 4-CPU environment, a 50% limit equals the use of 2 entire CPUs.
     • JOBCPUT%: Represents total CPU percentage across all processors. 
       In a 2-CPU environment, a 50% limit equals half of one CPU (Max 200%).
       In a 4-CPU environment, a 50% limit equals a quarter of one CPU (Max 400%).

3. If data collection sampling intervals require adjustment for address space monitoring, modify the MVSMON member.

4. Define specific states (e.g., Up, Down, Active) for the MUF region in the MVSSTATEmember.

5. Apply the changes using one of the following methods:

   • Warm Start: Use the RELOAD subcommand within SYSVIEW to activate changes in the parmlib members.
   • Modify Command: Issue the MODIFY command to recycle the data collection subtask.