z/OS metrics
The following metrics are available in the MainView for z/OS views. For information about using this table, see How-to-use-the-metric-tables. Before you create alarms based on these metrics, review Planning.
Metric | Indicates | View name Field name Element name | Recommended view filter | Recommended field threshold (adjust for site-specific processing) |
|---|---|---|---|---|
Class A - Availability metrics | ||||
Batch jobs | Jobs that should be active are not active The JESTATR view is populated by the UBBPARM member BBDTQRJ0 or STM messages. | JESTATR Status DESCR | NAME = 'xxx' | DESCR 'ACTIVE' |
Class B - Performance metrics | ||||
Coupling facility (CF) | How much CF CPU is consumed by CF activity When close to 100% CF, tasks have to wait and application delays might occur. CF delays are not displayed in the JDELAY view. | CFOVERZ % CPU Util CFIPRCPC | None | CFIPRCPC > 90 k |
CF-dedicated storage is overcommitted, which can cause application delays These delays are not displayed in the JDELAY view. | CFOVERZ % Stor Util CFISTGPC | None | CFISTGPC > 80 | |
How much CF storage is in use by any individual structure | CFSTRUCZ Struct Stor% CFGSSZPC | None | CFGSSZPC > 40 | |
CSA over-committed | CSA is nearing maximum | CSASUM % CSRECSUP | None | CSRECSUP > 80 |
DASD RESERVES | Cross-system RESERVES are preventing access to a DASD volume Use the alarm persistence feature on at least two intervals. | SENQR Rsv RCRSV | None | RCRSV = 'ON' |
I/O rate and response | DASD slow down | DEVSTAT Resp time DXISRVAT | VOLSER IN (volser1, volser2...) | DXISRVAT > 10 |
DEVSTAT Rate per sec DXISSRT | VOLSER IN (volser1, volser2...) | DXISSRT > 1 | ||
Performance Index (PI) problems | Jobs that are not meeting PIs | WMSCLS Max PI MXIPI | None | MXIPI > 1 |
z/OS slow downs | Which jobs are delayed due to resource contention Contention for z/OS managed resources can slow critical applications. | JDELAYR Total Delay % ASLDLYP | (ASGNAME IN (aspc1, aspc2...) AND ASGFLSC 'OTHER') | ASLDLYP > nnnn where nnnn exceeds acceptable values for the address spaces selected |
Class C - Decision support metrics | ||||
CSA utilization | Who is using CSA, both active and ended | CSAREM UnRel Tot% CDRETUP | CDREJNAM='%remain' | CDRETUP > 5 |
Logical volume response time | Poor I/O response time at the volume level and possible application response time problems Use this metric only for supporting information; monitor the actual work, such as the transaction or job. Logical volume response time is the I/O response to a DASD device as reported by the I/O Supervisor (IOS). | DEVSTAT Resp Time DXISRVAT | DXGSER IN (vol1, vol2...) | DXISRVAT > 25 |
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