Manual Chapter : Device health metrics

Applies To:

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BIG-IQ Centralized Management

  • 8.2.0, 8.1.0, 8.0.0
Manual Chapter

Device health metrics

The following list defines metrics sets and their corresponding metrics for the application statistics displayed in the dimensions pane table in the
Device Health
screen of the GUI. Each table row is read from left to right, where each metric set is defined as it would relate to each listed dimension, and each metric corresponds to its metric set.
Dimension
Metric Set
Metric Set Definition
Metric
Metric Definition
BIG-IP Host Names
BIG-IP Blades
Process Name
Process ID
BIG-IP Modules
CPU
The percent CPU usage based on overall and specific activities of the BIG-IP system devices.
System
The average (percent) CPU usage for all the running BIG-IP systems over a given time period.
User
I/O Wait
The percentage of time (during the selected time period) that a given CPU is idle for an I/O wait operation. This occurs when at least one outstanding I/O disk operation is requested by a task scheduled on system CPU.
Stolen
The percentage of time a virtual CPU waits for real CPU when the hypervisor is servicing another virtual machine.
Usage
The percent CPU usage for the various processes used bu the BIG-IP system.
BIG-IP Host Names BIG-IP Blades
Memory Usage
The percent RAM used by system processes of the BIG-IP system devices.
Other
The average percentage of used RAM from other device processes.
TMM
The average percentage RAM used by device TMM processes.
Total
The average percentage of RAM used by the system's devices.
BIG-IP Host Names
BIG-IP Blades
BIG-IP CPU Cores
Disk Merges
The average rate of merges per second (merge/s) at which an application completes a read or write to a hard disk. This indicated the speed of successful disk merges.
Avg/s Read
The average rate per second that an application completes a read merge from the hard disk.
Avg/s Write
The average rate per second that an application completes a read merge from the hard disk.
BIG-IP Host Names
BIG-IP Blades
Disk Operations
The average rate of operations per second (Ops) at which an application completes a read or write to a hard disk. This operation indicates the speed at which an application saves or extracts data from a hard disk.
Avg/s Read
The average rate per second that an application completes a write merge from the hard disk.
Avg/s Write
The average rate per second that an application completes a write operation to the hard disk.
BIG-IP Host Names
BIG-IP Blades
Disk Throughput
The average rate of bytes per second (Bps) that the application reads or writes from hard disk data. This indicates the speed of the application for the client.
Avg/s Read
The average rate per second of bytes that application reads from the hard disk.
Avg/s Write
The average rate per second of bytes that application writes to the hard disk.
BIG-IP Host Names
Interface Names
Throughput Drops
The average rate of packets per second (pps) that were dropped by the BIG-IP interface or discarded by the TMM over the course of the transaction.
Avg/s Out
The average rate of packets per second that were accepted by the BIG-IP interface, but discarded by the TMM.
Avg/s In
The average rate of packets per second that were dropped by the BIG-IP interface.
Total Out
The total number of packets that were accepted by the BIG-IP interface, but discarded by the TMM.
Total In
The total number of packets that were dropped by the BIG-IP interface.
BIG-IP Host Names
Interface Names
Throughput Error
The average rate packets per second (pps) that were corrupted or arrived incomplete over the course of the transaction across the network.
Total In
The total number of packets received as throughput error.
Total Out
The total number of packets transmitted out as throughput error.
Avg/s In
The average packets per second received as throughput error.
Avg/s Out
The average packets per second transmitted out at through