6.0.1
Table Of Contents
- vSphere Monitoring and Performance
- Contents
- About vSphere Monitoring and Performance
- Updated Information
- Monitoring Inventory Objects with Performance Charts
- Performance Chart Types
- Data Counters
- Metric Groups in vSphere
- Data Collection Intervals
- Data Collection Levels
- View Performance Charts
- Performance Charts Options Available Under the View Menu
- Overview Performance Charts
- Clusters
- Datacenters
- Datastores
- Disk Space (Data Counters)
- Disk Space (File Types)
- Disk Space (Virtual Machines)
- Storage I/O Control Normalized Latency
- Storage I/O Control Aggregate IOPs
- Storage I/O Control Activity
- Average Device Latency per Host
- Maximum Queue Depth per Host
- Read IOPs per Host
- Write IOPs per Host
- Average Read Latency per Virtual Machine Disk
- Average Write Latency per Virtual Machine Disk
- Read IOPs per Virtual Machine Disk
- Write IOPs per Virtual Machine Disk
- Virtual Machine Observed Latency per Datastore
- Hosts
- Resource Pools
- vApps
- Virtual Machines
- CPU (%)
- CPU Usage (MHz)
- Disk (Average)
- Disk (Rate)
- Disk (Number)
- Virtual Disk Requests (Number)
- Virtual Disk Rate (KBps)
- Memory (Usage)
- Memory (Balloon)
- Memory (Swap Rate)
- Memory (Data Counters)
- Network (Usage)
- Network (Rate)
- Network (Packets)
- Disk Space (Data Counters)
- Disk Space (Datastores)
- Disk Space (File Types)
- Fault Tolerance Performance Counters
- Working with Advanced and Custom Charts
- Troubleshoot and Enhance Performance
- Monitoring Guest Operating System Performance
- Monitoring Host Health Status
- Monitoring Events, Alarms, and Automated Actions
- View Events
- View System Logs
- Export Events Data
- View Triggered Alarms and Alarm Definitions
- Live Refresh of Recent Tasks and Alarms
- Set an Alarm
- Acknowledge Triggered Alarms
- Reset Triggered Event Alarms
- Preconfigured vSphere Alarms
- Monitoring Solutions with the vCenter Solutions Manager
- Monitoring the Health of Services and Nodes
- Performance Monitoring Utilities: resxtop and esxtop
- Using the vimtop Plug-In to Monitor the Resource Usage of Services
- Monitoring Networked Devices with SNMP and vSphere
- Using SNMP Traps with vCenter Server
- Configure SNMP for ESXi
- SNMP Diagnostics
- Monitor Guest Operating Systems with SNMP
- VMware MIB Files
- SNMPv2 Diagnostic Counters
- System Log Files
- Index
Table 1‑35. Data Counters
Chart Label Description
Write IOPs per Host Number of disk write commands completed on each disk on the host, per second.
Write rate = blocks written per second × block size
n
Counter: numberWriteAveraged
n
Stats Type: Rate
n
Unit: Number
n
Rollup Type: Average
n
Collection Level: 3
Average Read Latency per Virtual Machine Disk
This chart displays the top ten virtual machine disks with the highest average read latency in milliseconds.
Data is not displayed when the virtual machine is powered off.
This chart is located in the Performance view of the datastore Performance tab.
Table 1‑36. Data Counters
Chart Label Description
Average Read Latency
per Virtual Machine
Disk
Latency measures the time used to process a SCSI command issued by the guest OS to the
virtual machine. The kernel latency is the time VMkernel takes to process an I/O request. The
device latency is the time it takes the hardware to handle the request.
Total latency = kernelLatency + deviceLatency.
n
Counter: totalReadLatency
n
Stats Type: Absolute
n
Unit: Milliseconds (ms)
n
Rollup Type: Average
n
Collection Level: 3
Average Write Latency per Virtual Machine Disk
This chart displays the top ten virtual machine disks with the highest average write latency in milliseconds.
Data is not displayed when the virtual machine is powered off.
This chart is located in the Performance view of the datastore Performance tab.
Table 1‑37. Data Counters
Chart Label Description
Average Write Latency
per Virtual Machine
Disk
Latency measures the time used to process a SCSI command issued by the guest OS to the
virtual machine. The kernel latency is the time VMkernel takes to process an I/O request. The
device latency is the time it takes the hardware to handle the request.
Total latency = kernelLatency + deviceLatency.
n
Counter: totalWriteLatency
n
Stats Type: Absolute
n
Unit: Milliseconds (ms)
n
Rollup Type: Average
n
Collection Level: 3
Read IOPs per Virtual Machine Disk
This chart displays the top ten virtual machines with the highest number of read operations. Data is not
displayed when the virtual machine is powered off.
This chart is located in the Performance view of the datastore Performance tab.
Chapter 1 Monitoring Inventory Objects with Performance Charts
VMware, Inc. 33