SE metrics includes information on connection, bandwidth, transaction and memory usage for an SE.

The Analytics information available for an SE includes performance metrics for the SE over a defined time. To access the SE Metrics page:

  1. Navigate to Infrastructure > Cloud Resources > Service Engine .

  2. Select a cloud from the Select Clouddrop-down menu.

  3. Click the name of an SE to open the Analytics tab for the SE.

  4. Click the < icon to open the Service Engine Metrics tile.

The Analytics tab of the SE presents performance metrics information for the SE. Data shown is filtered by the time selected. Service Engine Metrics Tiles continuously display time-averaged data. They govern what appears in the chart display. The following metrics are available:

Metric

Description

Throughput

Total bandwidth flowing through the SE for all virtual services being hosted by that SE. It includes the bandwidth flowing in and out of the SE between the client and the virtual service, and the traffic between the SE and the servers. An SE can report approximately double the throughput of its virtual services.

CPU Usage

Displays the utilization of the CPUs allocated to the SE. The total number of CPUs appears in the SE Quick Info Popup window. Under normal conditions, CPU usage should not regularly exceed 90%, as this may cause latency in the virtual services and disrupt the client experience.

The CPU Usage metric tile shows a horizontal bar indicating current usage, with a red line at the right to indicate how close the SE is to pushing the limits of its available CPU capacity. The CPU usage can be indirectly controlled or improved by taking actions, such as:

Configuration: Changing the configuration of virtual services, such as changing SSL or compression settings, impacts the CPU usage.

CPU Allocation: Allocating more vCPUs per SE. The default setting is two vCPUs per SE. Increasing this number is particularly useful for tasks such as SSL termination or compression, which heavily consume CPU resources. The setting for the number of vCPUs assigned to an SE is in the SE group.

Scale Out:Reduce the CPU load by scaling the SE’s virtual services across additional SEs. This increases the total capacity and reduces the load on this SE. The high availability setting of the SE group dictates when a virtual service should be scaled out across additional SEs or simply migrated away from a busy SE.

CPU Reservation: By default, CPUs resource is not reserved in a VMware deployment. Within vCenter, you can enable reservation for the SE’s virtual machine. This guarantees that other virtual machines sharing the same physical host server are not able to borrow or compete for CPU resources. This setting can be changed in the SE group properties. Changes will apply for only new SEs. Changes for the existing SEs have to be done manually within vCenter.

Memory Usage

Amount of used versus available memory. Memory utilization should not exceed 90% for an extended period.

Rx Packets

The received network packets for the SE.

Tx Packets

The number of packets successfully transmitted for the SE.

Interface Throughput

The combined throughput for all network interfaces utilized by this SE. Throughput is measured as both client and server side of any virtual services, plus the management traffic between the SE and the Controllers.

Virtual Service Throughput

The combined throughput for all network interfaces utilized by this SE. Throughput is measured as both client and server side of any virtual services, plus the management traffic between the SE and the Controllers.

Connection Memory Usage

Percentage of connection memoryused by the SE.

Dynamic Memory Usage

Percentage of dynamic memory used by the SE.

SSL Cache Usage

Percentage of SSL cache memory used by the SE.

Persistent Table Usage

Persistent Table used by the SE expressed as %. Since client IP persistence is stored locally on each SE, larger tables consume more memory.

Buffer Usage

Percentage of buffer memoryused by the SE.

The list of SE metrics available in the NSX Advanced Load Balancer system are listed in the table below:

Metric

Description

se_if.avg_bandwidth

Transmit and receive network bandwidth across all SE interfaces.

se_stats.avg_connection_mem_usage

Percent of connection memory consumed.

se_stats.avg_connections

Rate of client network connection attempts (SYNs) per second across all virtual services for an SE.

se_stats.avg_connections_dropped

Number of connections dropped or failed to establish across all virtual services for an SE. Excludes drops due to a policy action.

se_stats.avg_cpu_usage

Hosts view of the Service Engines actively utilized CPU usage as a percent of total available CPU.

se_stats.avg_disk1_usage

Percent of SE disk 1 capacity used.

se_if.avg_eth0_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth10_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth11_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth12_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth13_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth14_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth15_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth16_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth17_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth18_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth19_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth1_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth20_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth21_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth22_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth23_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth2_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth3_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth4_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth5_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth6_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth7_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth8_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_if.avg_eth9_bandwidth

Transmit and receive network bandwidth for an SE interface.

se_stats.avg_mem_usage

Percent of allocated memory used.

se_stats.avg_packet_buffer_header_usage

Percent of all network packet buffers used.

se_stats.avg_packet_buffer_large_usage

Percent of large network packet buffers used.

se_stats.avg_packet_buffer_small_usage

Percent of small network packet buffers used.

se_stats.avg_packet_buffer_usage

Percent of total configured network packet buffers used.

se_stats.avg_persistent_table_usage

Percent of session persistence table used.

se_if.avg_rx_bandwidth

Received network bandwidth across all interfaces for an SE.

se_if.avg_rx_bytes_dropped

Bytes per second of received packets that were dropped. Includes packets across all SE interfaces.

se_if.avg_rx_pkts

Received network packets across all SE interfaces.

se_if.avg_rx_pkts_dropped

Received packets dropped per second. Includes packet drops across all interfaces.

se_stats.avg_ssl_session_cache_usage

Percent of SSL session cache used.

se_if.avg_tx_pkts

Network packets transmitted across all SE interfaces.

se_if.max_se_bandwidth

Maximum bandwidth through an SE within the sample period.

se_stats.pct_connections_dropped

Percent of SE connections dropped.

se_if.pct_rx_bytes_dropped

Percent of SE bytes dropped.

se_if.pct_rx_pkts_dropped

Percent of SE packets dropped.

se_stats.pct_syn_cache_usage

Percent of SYN cache used. Higher usage indicates too many incomplete open connection attempts.

se_stats.avg_dynamic_mem_usage

Percent of average dynamic memory used.

VMWare Metrics

For more information on VMware metrics related to SE, see