Network performance data
The network performance data graphs display performance in terms of XDQP reads and writes. XDQP is the protocol MarkLogic uses for internal host-to-host communication on port 7999.
The Overview page displays various XDQP performance as the sum of XDQP activity across the cluster. High XDQP rates are usually not an issue unless they are so high as to saturate your internal network. Higher usage occurs during data load and query execution. Merges do not involve XDQP.
Note
If XDQP is excessively high during loads, running the MarkLogic Content Pump (mlcp) with fast forest placement will minimize XDQP communication needs. For details on the MarkLogic Content Pump, see Loading Content Using MarkLogic Content Pump in Loading Content Into MarkLogic Server Guide.
The Overview page displays a chart with the metrics described in the following table.
Metric |
Description |
|---|---|
Network |
The network traffic between nodes in the cluster. Heavy queries or ingestion will create a spike. The displayed metrics are:
|
External KMS Request Rate |
Number of requests per second to the external key management server. |
External KMS Request Time |
Average round-trip time for a request to an external key management server. |
LDAP Request Rate |
Number of requests per second to the LDAP server. |
LDAP Request Time |
Average round-trip time for a request to an LDAP server. |
Click on the arrow in the upper left-hand section of the NETWORK graph in the Overview page to view graphs that present more detailed performance metrics for each host in the cluster. The charts displayed on the NETWORK DETAIL page are described in the following table.
Chart |
Description |
|---|---|
XDQP Read Rate |
The amount of data (in MB/sec) read over XDQP by each host in the cluster. This is the sum of foreign-xdqp-client-receive-rate and foreign-xdqp-server-receive-rate. |
XDQP Write Rate |
The amount of data (in MB/sec) written over XDQP by each host in the cluster. This is the sum of foreign-xdqp-client-send-rate and foreign-xdqp-server-send-rate. |
XDQP Read Load |
The execution time (in seconds) of read requests by each host in the cluster. This is the sum of xdqp-client-receive-load and xdqp-server-receive-load. |
XDQP Write Load |
The execution time (in seconds) of write requests by each host in the cluster. This is the sum of xdqp-client-send-load and xdqp-server-send-load. |
Foreign XDQP Read Rate |
The amount of data (in MB/sec) read over XDQP by each host in the cluster from a foreign cluster. This is the sum of foreign-xdqp-client-receive-rate and foreign-xdqp-server-receive-rate. |
Foreign XDQP Write Rate |
The amount of data (in MB/sec) written over XDQP by each host in the cluster to a foreign cluster. This is the sum of foreign-xdqp-client-send-rate and foreign-xdqp-server-send-rate. |
Foreign XDQP Read Load |
The execution time (in seconds) of read requests by each host in the cluster from a foreign cluster. This is the sum of foreign-xdqp-client-receive-load and foreign-xdqp-server-receive-load. |
Foreign XDQP Write Load |
The execution time (in seconds) of write requests by each host in the cluster to a foreign cluster. This is the sum of foreign-xdqp-client-send-load and foreign-xdqp-server-send-load. |
External KMS Request Rate |
Number of requests per second to the external key management server. |
External KMS Request Time |
Average round-trip time for a request to an external key management server. |
LDAP Request Rate |
Number of requests per second to the LDAP server. |
LDAP Request Time |
Average round-trip time for a request to an LDAP server. |