6.7
Table Of Contents
- vSphere Monitoring and Performance
- Contents
- About vSphere Monitoring and Performance
- 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
- Data centers
- Datastores and Datastore Clusters
- Disk Space (Data Counters)
- Disk Space (File Types)
- Disk Space (Datastores)
- Disk Space (Virtual Machines)
- Space Allocated by Datastore in GB
- Space Capacity by Datastore in GB
- 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 vSphere Health
- Monitoring Events, Alarms, and Automated Actions
- View Events
- View System Logs
- Export Events Data
- Streaming Events to a Remote Syslog Server
- Retention of Events in the vCenter Server Database
- View Triggered Alarms and Alarm Definitions
- Live Refresh of Recent Tasks and Alarms
- Set an Alarm in the vSphere Web Client
- Set an Alarm in the vSphere Client
- 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 Use 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
- View System Log Entries
- View System Logs on an ESXi Host
- System Logs
- Export System Log Files
- ESXi Log Files
- Upload Logs Package to a VMware Service Request
- Configure Syslog on ESXi Hosts
- Configuring Logging Levels for the Guest Operating System
- Collecting Log Files
- Viewing Log Files with the Log Browser
- Enable the Log Browser Plug-In on the vCenter Server Appliance
- Enable the Log Browser Plug-In on a vCenter Server Instance That Runs on Windows
- Retrieve Logs
- Search Log Files
- Filter Log Files
- Create Advanced Log Filters
- Adjust Log Times
- Export Logs from the Log Browser
- Compare Log Files
- Manage Logs Using the Log Browser
- Browse Log Files from Different Objects
n
If virtual machines running on the same host communicate with each other, connect them to the same
virtual switch to avoid the cost of transferring packets over the physical network.
n
Assign each physical NIC to a port group and a virtual switch.
n
Use separate physical NICs to handle the different traffic streams, such as network packets
generated by virtual machines, iSCSI protocols, vMotion tasks.
n
Ensure that the physical NIC capacity is large enough to handle the network traffic on that virtual
switch. If the capacity is not enough, consider using a high-bandwidth physical NIC (10Gbps) or
moving some virtual machines to a virtual switch with a lighter load or to a new virtual switch.
n
If packets are being dropped at the virtual switch port, increase the virtual network driver ring buffers
where applicable.
n
Verify that the reported speed and duplex settings for the physical NIC match the hardware
expectations and that the hardware is configured to run at its maximum capability. For example, verify
that NICs with 1Gbps are not reset to 100Mbps because they are connected to an older switch.
n
Verify that all NICs are running in full duplex mode. Hardware connectivity issues might result in a
NIC resetting itself to a lower speed or half duplex mode.
n
Use vNICs that are TCP Segmentation Offload (TSO)-capable, and verify that TCP Segmentation
Offload-Jumbo Frames are enabled where possible.
Empty Performance Charts
No graphics or data are displayed in performance charts.
Problem
When data is missing for a performance chart, the chart appears empty and you see the message No
data available.
Cause
The causes for missing data in performance charts that are described herein are based on the
assumption that the default roll-up configuration for the vCenter Server system has not changed. The
causes include but are not limited to the following scenarios:
n
Metrics introduced in ESXi 5.0 are not available for hosts running earlier versions.
n
Data is deleted when you remove or add objects to vCenter Server.
n
Performance charts data for inventory objects that were moved to a new site by VMware vCenter Site
Recovery Manager is deleted from the old site and not copied to the new site.
n
Performance charts data is deleted when you use VMware vMotion across vCenter Server instances.
n
Real-time statistics are not available for disconnected hosts or powered off virtual machines.
vSphere Monitoring and Performance
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