CPU: MIPS Used - System Level (Captured vs Uncaptured)
This report provides insights into potential MIPS overages. This can help you to determine the need to tune and adjust your system processes and avoid overcapacity by allocating MIPS back to business applications. Aside from the potential cost savings, a regular assessment, based on this report, can help you maintain your SLA by keeping up the performance and availability level.
This report analyzes a system’s capture ratio to determine whether the CPU time that is used by system-related processes (uncaptured CPU time) is too high. It shows both the captured and uncaptured CPU MIPS used at the system level. It also shows the system's capture ratio. A notable increase or decrease in a system's capture ratio can identify a system problem. It is recommended that you closely monitor a system's capture ratio after you apply any CPU hardware changes, major operating system upgrades, or software upgrades.
- Source tables
- [Presentation View].[LPAR Level Metrics]
- [Presentation View].[WLM Service Class Period Usage/Delay Metrics]
- Drill through to the following reports
- CPU: MIPS Used - zServer/LPAR Level
- CPU: MIPS Used - LPAR Level by WLM Importance
- CPU: MIPS Used - Service Class Period Level
- CPU: Over/Under Share Weight - CPC by LPAR
- Standard prompts:
- date range
- time range
- interval band
- show
- Report-specific prompts
- cpu serial no
- processor type
- lpar name
The CPU: MIPS Used - System Level (Captured vs Uncaptured) report contains the following information:
- cpu serial no
- The zServer/CEC serial number.
- processor type
- The engine type: CP, zIIP, or zAAP. The list contains only installed processor types.
- system
- The z/OS system id.
- LPAR MGMT MIPS USED
- The difference between LPAR Dispatch CPU Time and LPAR Effective Dispatch CPU Time, converted to MIPS used.
- CAPTURED MIPS USED
- The total CPU time that is captured in the Type72 workload data, converted to MIPS used.
- UNCAPTURED MIPS USED
- The difference between LPAR Effective Dispatch CPU Time and the total CPU time that is captured in the Type72 workload data, converted to MIPS used.
- CAPTURE RATIO (CR)
- The ratio of total CPU time that is captured in the Type72 workload data to LPAR Dispatch CPU Time.
- CR - Warning
- The capture ratio warning threshold line = 0.90.
- CR- Critical
- The capture ratio critical threshold line = 0.85.
- LOGIC PROC MIPS
The logical processors MIPS value is the MIPS capacity of the logical processors that are assigned to this LPAR
If this value is double the maximum of the total MIPS usage, then this line does not appear in the chart. Showing the line would make the chart appear small.
- WEIGHT %
- The per cent of the shared pool that is guaranteed to the LPAR, if the LPAR uses shared processors. If the LPAR uses dedicated processors, then the value is shown as N/A.
- GUARANTEED MIPS
The guaranteed capacity in MIPS on this LPAR. The value is calculated according to the weight assigned to this LPAR.
If dedicated processors are assigned to this LPAR, then this line does not appear in the chart and the value is shown as N/A in the table.
If this value is double the maximum of the total MIPS usage, then this line does not appear in the chart. Showing the line would make the chart appear small.