Network performance metrics
It describes the metrics indicators that are collected by Network Performance Monitoring. You can search in Sitemap > Metrics Search. Network performance metrics provide all data folded into fields.
npm_process_tag_data
It indicates the network communication metric for each session. The collection interval is 1 minute.
| Field name | Unit | Description | Remarks |
|---|---|---|---|
app_name | - | Custom identification tag for the communicating entity | Default - A single Linux server environment: Host name - Kubernetes container environment: Pod name |
avg_jitter | ms | Average of packet round-trip latency fluctuations | Average jitter over the collection interval |
avg_latency | ms | Average packet round-trip latency time | Average latency over the collection interval |
container_name | - | Name of the container collected in the Kubernetes environment | Empty value if not in Kubernetes environment |
direction | - | Session connection direction | IN(Inbound), OUT(Outbound) |
foreign_container_id | - | ID of the container for local communication in the Kubernetes container | During local communication, the target cannot be identified using the IP address and port number. Therefore, additional data is provided to find the exact target. |
foreign_ip | - | Target IP address | - |
foreign_pod_id | - | Pod ID in case of local communication within a Kubernetes Pod | During local communication, the target cannot be identified using the IP address and port number. Therefore, additional data is provided to find the exact target. |
foreign_port | - | Target port number | Client Port (Inbound - foreign_port) is displayed with data merged to 0. |
host_tag | - | Source host name | - |
local_ip | - | Source IP address | - |
local_port | - | Source port number | Client Port (Outbound - local_port) is displayed with data merged to 0. |
lost_count | count | Number of lost packets | - |
max_jitter | ms | Maximum for packet round-trip latency fluctuations | Maximum for jitters collected for a certain period |
max_latency | ms | Maximum packet round-trip latency time | Maximum for latencies collected for a certain period |
min_jitter | ms | Minimum for packet round-trip latency fluctuations | Minimum for jitters collected for a certain period |
min_latency | ms | Minimum packet round-trip latency time | Minimum for latencies collected for a certain period |
pod_name | - | Pod name in case the communication source is in the Kubernetes environment | Empty value if not in Kubernetes environment |
process_type | - | Type of process for communication | - |
protocol | - | Communication protocol type | TCP / UDP |
recv_packet_count | count | Number of received packets | - |
recv_packet_size | byte | Data size of the received packet | - |
retransmission_count | count | Number of retransmitted packets | - |
row_count | count | Session count including duplicates | - |
send_packet_count | count | Number of transmitted packets | - |
send_packet_size | byte | Total size of the transmitted packets | - |
session_count | count | Session count excluding duplicates | The number of unique sessions is calculated as HyperLogLog(1) rather than a simple sum. |
session_count_lobits | - | Bit data (HyperLogLog) for calculation of the unique session | It is HyperLogLog related information for statistical processing. |
tot_jitter | ms | Sum of packet round-trip latency fluctuations | - |
tot_latency | ms | Sum of packet round-trip latencies | - |
Note
(1): HyperLogLog is a probabilistic data structure that estimates the number of elements in a set with very little memory.
npm_process_tag_list
This is internal data for processing foreign area tagging in the session.
- Tag lists for each session
- Collection interval: 1 minute
| Field name | Description | Remarks |
|---|---|---|
foreign_app_name | Custom identification value of the target | Default - A single Linux server environment: Host name - Kubernetes container environment: Pod name |
foreign_container_id | ID of the container for local communication in the Kubernetes container | - |
foreign_container_name | Container name in case the target is in the Kubernetes environment | - |
foreign_host_tag | Target host name | - |
foreign_ip | Target IP address | - |
foreign_pod_id | Pod ID in case of local communication within a Kubernetes Pod | - |
foreign_pod_name | Pod name in case the communication target is in the Kubernetes environment | - |
foreign_port | Target port number | - |
foreign_process_type | Target process name | untagged if not identified |
local_inbound_check | Checks whether the inbound communication works in the internal network. | - |