Monitor metrics

To effectively monitor system performance, you must decide which aspects of system performance you want to monitor. IBM® Navigator for i offers various performance measurements, which are known as metrics, to help you pinpoint different aspects of system performance.

When you configure a monitor, you can use any metric, a group of metrics, or all the metrics from the list to be included in your monitor. Metric types that you can use in your monitor include the following.

Table 1.
Metric groups	Metric description
CPU Utilization	The percentage of available processing unit time that is consumed by jobs on your system. Choose from the following types of CPU Utilization metrics for use in your monitors: CPU Utilization (Average): Configured CPU percent unscaled. CPU Utilization (Interactive Jobs): Configured CPU percent that is consumed by interactive jobs. CPU Utilization (Uncapped): Uncapped CPU percent unscaled. The amount of unscaled system CPU consumed relative to the maximum uncapped CPU the partition could consume based on the number of the virtual processors that are assigned to the partition and the capacity of the shared virtual pool. CPU Utilization (SQL): SQL CPU percent unscaled. The amount of unscaled system CPU consumed performing work that is done on behalf of SQL operations relative to the configured CPU time (processor units) available to the partition.
Interactive Response Time (Average and Maximum)	The response time that interactive jobs experience on your system.
Transaction Rate (Interactive)	The number of transactions per second completed on your system by interactive jobs (Job Type = 'I').
Batch Logical Database I/O	The average number of logical database input/output (I/O) operations that are currently performed by batch jobs (Job Type = 'B') on the system.
Disk Arm Utilization (Average and Maximum)	The disk unit percent busy for all disks.
Disk Arm Utilization for System ASP (Average and Maximum)	The disk unit percent busy for disks in the system ASP.
Disk Arm Utilization for User ASP (Average and Maximum)	The disk unit percent busy for all disks in user ASPs.
Disk Arm Utilization for Independent ASP (Average and Maximum)	The disk unit percent busy for disks in independent ASPs.
Disk Storage Utilization (Average and Maximum)	The percentage of disk storage that is full on your system during the time you collect the data.
Disk Storage Utilization for System ASP (Average and Maximum)	The percentage of disk storage that is full in the system ASP during the time you collect the data.
Disk Storage Utilization for User ASP (Average and Maximum)	The percentage of disk storage that is full in user ASPs during the time you collect the data.
Disk Storage Utilization for Independent ASP (Average and Maximum)	The percentage of disk storage that is full in independent ASPs during the time you collect the data.
Communications Line Utilization (Average and Maximum)	The amount of data that was sent and received on all your system communication lines.
LAN Utilization (Maximum and Average)	The amount of data that was sent and received on all your local area network (LAN) communication lines.
Machine Pool Faults	The number of faults per second occurring in the machine pool on the system.
User Pool Faults (Maximum and Average)	The number of faults per second per pool.
Temporary Storage Used	The total amount of temporary storage (megabytes) in use within the system. This metric includes both system and user temporary storage.
Spool File Creation Rate	The number of spool files that are created per second.
Shared Processor Pool Utilization (Virtual and Physical)	The amount of CPU consumed in the shared pool by all partitions that are using the pool relative to the CPU available within the pool.
Disk Response Time (Read and Write)	The response time that disk units experienced on your system.
HTTP Requests Received Rate	The number of requests received per second for all HTTP servers.
HTTP Requests Received (Maximum)	The largest number of HTTP requests received by a single server.
HTTP Responses Sent Rate	The number of responses sent per second for all HTTP servers.
HTTP Responses Sent (Maximum)	The largest number of HTTP responses sent by a single server.
HTTP Non-Cached Requests Processed (Average and Maximum)	The number of non-cached requests processed for HTTP servers.
HTTP Error Responses Sent (Average and Maximum)	The number of error responses sent for HTTP servers.
HTTP Non-Cached Requests Processing Time (Total and Highest Average)	The processing time for non-cached requests for HTTP servers.
HTTP Cached Requests Processing Time (Total and Highest Average)	The processing time for cached requests for HTTP servers.

If you need more help, click the Help button on the Create New System Monitor-Metrics page. After you become familiar with the IBM Navigator for i metrics, which metrics you select depend on the information needs of your computing environment. After you select metrics that target the information you are trying to see, you are ready to view and change detailed metric information for each metric you selected for your monitor.