vSAN Performance Graphs in the vSphere Web Client Part 3

Products

• VMware vSAN

Issue/Introduction

This article explains vSAN Performance Graphs, available in vSAN (formerly known as Virtual SAN) 8.0 U1 and later.

For other graphs in vSAN 6.2 and later, see: vSAN Performance Graphs in the vSphere Web Client Part 1.
For Remote VM graphs in vSAN 7.0 U1 and later, see: vSAN Performance Graphs in the vSphere Web Client Part 2.

Environment

VMware vSAN 8.0.x

Resolution

 

To get vSAN performance graphs/charts, first, you need to enable the vSAN performance service.

You can view performance changes from different levels of entities (clusters, hosts, and virtual disks).

There are multiple graphs you can monitor to understand vSAN performance. Here are the details of all available vSAN performance graphs.

From vSAN 80U1, multiple performance graphs support real-time metrics with 30-second intervals and 7-day retention.

Note:

** denotes vSAN ESA only. 

*** denotes the graph support real-time metrics query, when querying real-time metrics through vSAN SDK, the time range should not exceed 2 hours.

• Cluster Performance
  • Cluster RDT Network Latency Graphs
  • Cluster RDT Network Socket Inbound Bytes Graphs
  • Cluster RDT Network Socket Outbound Bytes Graphs
  • Cluster RDT Network Outbound Context Bytes Graphs
  • Cluster RDT Network Outbound Queueing Latency Graphs
• Host Performance
  • Host RDT Network Latency Graphs
  • Host RDT Network Socket Inbound Bytes Graphs
  • Host RDT Network Socket Outbound Bytes Graphs
  • Host RDT Network Outbound Context Bytes Graphs
  • Host RDT Network Outbound Queueing Latency Graphs
  • VMkernel Network RDT Latency Graphs Graphs
  • VMkernel Network RDT Socket Inbound Bytes Graphs
  • VMkernel Network RDT Socket Outbound Bytes Graphs
  • VMkernel Network RDT Outbound Context Bytes Graphs
  • VMkernel Network RDT Outbound Queueing Latency Graphs
  • Host Backend Cache Graphs (Available from vSAN 8.0 U2)**
  • Cluster Backend Cache Graphs (Available from vSAN 9.0) ** ***
  • Host Backend Cache Graphs (Available from vSAN 9.0) ** ***

 

Cluster Performance

Cluster RDT Network Latency Graphs

This graph shows the cluster level latency of the RDT network.
 

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Average Latency	RDT network cluster average latency.	avgLatency	cluster-rdt-network-latency
Minimum Latency	RDT network cluster minimum latency.	minLatency	cluster-rdt-network-latency
Maximum Latency	RDT network cluster maximum latency.	maxLatency	cluster-rdt-network-latency

Cluster RDT Network Socket Inbound Bytes Graphs

 

This graph shows the cluster level socket inbound bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Inbound Bytes	RDT network socket average inbound bytes for last 5 seconds.	rxSbSpaceAvg	cluster-rdt-network-latency
Socket Min Inbound Bytes	RDT network socket minimum inbound bytes for last 5 seconds.	rxSbSpaceMin	cluster-rdt-network-latency
Socket Max Inbound Bytes	RDT network socket maximum inbound bytes for last 5 seconds.	rxSbSpaceMax	cluster-rdt-network-latency

Cluster RDT Network Socket Outbound Bytes Graphs

This graph shows the cluster level socket outbound bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Outbound Bytes	RDT network socket average outbound bytes for last 5 seconds.	txSbSpaceAvg	cluster-rdt-network-latency
Socket Min Outbound Bytes	RDT network socket minimum outbound bytes for last 5 seconds.	txSbSpaceMin	cluster-rdt-network-latency
Socket Max Outbound Bytes	RDT network socket maximum outbound bytes for last 5 seconds.	txSbSpaceMax	cluster-rdt-network-latency

Cluster RDT Network Outbound Context Bytes Graphs

This graph shows the cluster level outbound context bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Outbound Context Bytes	RDT network average outbound context bytes for last 5 seconds.	txCtxQAvg	cluster-rdt-network-latency
Socket Min Outbound Context Bytes	RDT network minimum outbound context bytes for last 5 seconds.	txCtxQMin	cluster-rdt-network-latency
Socket Max Outbound Context Bytes	RDT network maximum outbound context bytes for last 5 seconds.	txCtxQMax	cluster-rdt-network-latency

Cluster RDT Network Outbound Queueing Latency Graphs

This graph shows the cluster level outbound queueing latency for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Avg Outbound Queueing Latency	RDT network average outbound queueing latency for last 5 seconds.	txQLatAvg	cluster-rdt-network-latency
Min Outbound Queueing Latency	RDT network minimum outbound queueing latency for last 5 seconds.	txQLatMin	cluster-rdt-network-latency
Max Outbound Queueing Latency	RDT network maximum outbound queueing latency for last 5 seconds.	txQLatMax	cluster-rdt-network-latency

Host Performance

Host RDT Network Latency Graphs

These graphs show metrics about RDT network metrics.

This graph shows the host level latency of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Average Latency	RDT network host average latency.	avgLatency	rdt-network-latency
Minimum Latency	RDT network host minimum latency.	minLatency	rdt-network-latency
Maximum Latency	RDT network host maximum latency.	maxLatency	rdt-network-latency

Host RDT Network Socket Inbound Bytes Graphs

This graph shows the host level socket inbound bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Inbound Bytes	RDT network socket average inbound bytes for last 5 seconds.	rxSbSpaceAvg	rdt-network-latency
Socket Min Inbound Bytes	RDT network socket minimum inbound bytes for last 5 seconds.	rxSbSpaceMin	rdt-network-latency
Socket Max Inbound Bytes	RDT network socket maximum inbound bytes for last 5 seconds.	rxSbSpaceMax	rdt-network-latency

Host RDT Network Socket Outbound Bytes Graphs

This graph shows the host level socket outbound bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Outbound Bytes	RDT network socket average outbound bytes for last 5 seconds.	txSbSpaceAvg	rdt-network-latency
Socket Min Outbound Bytes	RDT network socket minimum outbound bytes for last 5 seconds.	txSbSpaceMin	rdt-network-latency
Socket Max Outbound Bytes	RDT network socket maximum outbound bytes for last 5 seconds.	txSbSpaceMax	rdt-network-latency

Host RDT Network Outbound Context Bytes Graphs

This graph shows the host level outbound context bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Outbound Context Bytes	RDT network average outbound context bytes for last 5 seconds.	txCtxQAvg	rdt-network-latency
Socket Min Outbound Context Bytes	RDT network minimum outbound context bytes for last 5 seconds.	txCtxQMin	rdt-network-latency
Socket Max Outbound Context Bytes	RDT network maximum outbound context bytes for last 5 seconds.	txCtxQMax	rdt-network-latency

Host RDT Network Outbound Queueing Latency Graphs

This graph shows the host level outbound queueing latency for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Avg Outbound Queueing Latency	RDT network average outbound queueing latency for last 5 seconds.	txQLatAvg	rdt-network-latency
Min Outbound Queueing Latency	RDT network minimum outbound queueing latency for last 5 seconds.	txQLatMin	rdt-network-latency
Max Outbound Queueing Latency	RDT network maximum outbound queueing latency for last 5 seconds.	txQLatMax	rdt-network-latency

VMkernel Network RDT Latency Graphs Graphs

This graph shows VMkernel level latency of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Average Latency	RDT network VNIC average latency.	avgLatency	vnic-rdt-network-latency
Minimum Latency	RDT network VNIC minimum latency.	minLatency	vnic-rdt-network-latency
Maximum Latency	RDT network VNIC maximum latency.	maxLatency	vnic-rdt-network-latency

VMkernel Network RDT Socket Inbound Bytes Graphs

This graph shows the VMkernel level socket inbound bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Inbound Bytes	RDT network socket average inbound bytes for last 5 seconds.	rxSbSpaceAvg	vnic-rdt-network-latency
Socket Min Inbound Bytes	RDT network socket minimum inbound bytes for last 5 seconds.	rxSbSpaceMin	vnic-rdt-network-latency
Socket Max Inbound Bytes	RDT network socket maximum inbound bytes for last 5 seconds.	rxSbSpaceMax	vnic-rdt-network-latency

VMkernel Network RDT Socket Outbound Bytes Graphs

This graph shows the VMkernel level socket outbound bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Outbound Bytes	RDT network socket average outbound bytes for last 5 seconds.	txSbSpaceAvg	vnic-rdt-network-latency
Socket Min Outbound Bytes	RDT network socket minimum outbound bytes for last 5 seconds.	txSbSpaceMin	vnic-rdt-network-latency
Socket Max Outbound Bytes	RDT network socket maximum outbound bytes for last 5 seconds.	txSbSpaceMax	vnic-rdt-network-latency

VMkernel Network RDT Outbound Context Bytes Graphs

This graph shows the VMkernel level outbound context bytes for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Socket Avg Outbound Context Bytes	RDT network average outbound context bytes for last 5 seconds.	txCtxQAvg	vnic-rdt-network-latency
Socket Min Outbound Context Bytes	RDT network minimum outbound context bytes for last 5 seconds.	txCtxQMin	vnic-rdt-network-latency
Socket Max Outbound Context Bytes	RDT network maximum outbound context bytes for last 5 seconds.	txCtxQMax	vnic-rdt-network-latency

VMkernel Network RDT Outbound Queueing Latency Graphs

This graph shows the VMkernel level outbound queueing latency for last 5 seconds of the RDT network.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Avg Outbound Queueing Latency	RDT network average outbound queueing latency for last 5 seconds.	txQLatAvg	vnic-rdt-network-latency
Min Outbound Queueing Latency	RDT network minimum outbound queueing latency for last 5 seconds.	txQLatMin	vnic-rdt-network-latency
Max Outbound Queueing Latency	RDT network maximum outbound queueing latency for last 5 seconds.	txQLatMax	vnic-rdt-network-latency

Host Backend Cache Graphs (Available from vSAN 8.0 U2)**

These graphs show metrics about backend cache metrics.

This graph shows the host level backend cache miss per IOPS.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Cache Miss Per IOPS	Backend cache miss per IOPS.	iopsCacheMissRate	zdom-vtx

This graph shows the host level backend cache miss per throughput.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type
Cache Miss Per Throughput	Backend cache miss per throughput.	tputCacheMissRate	zdom-vtx

Cluster Backend Cache Graphs (Available from vSAN 9.0) ** ***

These graphs show metrics about backend cache metrics.

This graph shows the cluster level backend cache IOPS metrics.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type	Corresponding Real-time Entity type
IOPS	Cluster level IOPS consumed from the perspective of IO entering the vSAN ESA object backend.	iops	cluster-zdom-top-stats	hr-cluster-zdom-top-stats

This graph shows the cluster level backend cache throughput metrics.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type	Corresponding Real-time Entity type
Throughput	Cluster level throughput consumed from the perspective of IO entering the vSAN ESA object backend.	throughput	cluster-zdom-top-stats	hr-cluster-zdom-top-stats

This graph shows the cluster level backend cache latency metrics.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type	Corresponding Real-time Entity type
Latency	Cluster level average latency of IOs consumed from the perspective of IO entering the vSAN ESA object backend.	latency	cluster-zdom-top-stats	hr-cluster-zdom-top-stats

Host Backend Cache Graphs (Available from vSAN 9.0) ** ***

These graphs show metrics about backend cache IO metrics.

This graph shows the host level backend cache IOPS.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type	Corresponding Real-time Entity type
IOPS	Host level IOPS consumed from the perspective of IO entering the vSAN ESA object backend.	iops	host-zdom-top-stats	hr-host-zdom-top-stats

This graph shows the host level backend cache throughput.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type	Corresponding Real-time Entity type
Throughput	Host level throughput consumed from the perspective of IO entering the vSAN ESA object backend.	throughput	host-zdom-top-stats	hr-host-zdom-top-stats

This graph shows the host level backend cache latency.

Metrics	Metrics Description	Metric ID in API	Corresponding Entity Type	Corresponding Real-time Entity type
Latency	Host level average latency of IOs consumed from the perspective of IO entering the vSAN ESA object backend.	latency	host-zdom-top-stats	hr-host-zdom-top-stats