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
If snapshot files are consuming a lot of datastore space, consider consolidating them to the virtual disk when
they are no longer needed. Consolidating the snapshots deletes the redo log files and removes the snapshots
from the vSphere Web Client user interface. For information about consolidating the data center, see the
vSphere documentation.
Space Utilization by Virtual Machine
The Space Utilization by Virtual Machine chart displays the amount of space used by the five virtual
machines with the most space used on the datastore.
NOTE This chart does not show historical statistics. It only shows the most recently available data, which
may be up to 30 minutes late, depending on when the last statistics rollup occurred. In addition, statistics
are not collected across all datastores at one time. They are collected asynchronously.
The Space Utilization by Virtual Machine chart is located in the Space view of the datastore Performance
tab.
Table 1‑28. Data Counters
Chart Label Description
virtual_machine Amount of datastore space used by the five virtual machines with the most used
datastore space.
n
Counter: used
n
Stats Type: Absolute
n
Unit: Gigabytes (GB)
n
Rollup Type: Latest
n
Collection Level: 1
Chart Analysis
The datastore is at full capacity when the used space is equal to the capacity. Allocated space can be larger
than datastore capacity, for example, when you have snapshots and thin-provisioned disks. You can
provision more space to the datastore if possible, or you can add disks to the datastore or use shared
datastores.
If snapshot files are consuming a lot of datastore space, consider consolidating them to the virtual disk when
they are no longer needed. Consolidating the snapshots deletes the redo log files and removes the snapshots
from the vSphere Web Client user interface. For information about consolidating the data center, see the
vSphere documentation.
Storage I/O Control Normalized Latency
This chart displays the normalized latency in microseconds on the datastore, which is the latency that is
monitored by Storage I/O Control to detect congestion on the datastore. This metric computes a weighted
response time across all hosts and VMs accessing the datastore. I/O count is used as the weight for the
response time. It captures the device level latency and does not include any queuing inside the hypervisor
storage stack or inside the VM. It is adjusted for I/O size, meaning that high latencies that are the result of
very large I/Os are discounted so as not to make the datastore seem slower than it really is. Data for all
virtual machines is combined. This chart will display zero values when Storage I/O Control is disabled.
This chart is located in the Performance view of the datastore Performance tab. The
sizeNormalizedDatastoreLatency counter can also be displayed for datastore cluster charts.
vSphere Monitoring and Performance
30 VMware, Inc.