Note

These metrics are provided by the operating system. Due to differences in operating system metrics available and the methodology used to take measurements, the values may not be consistent across different operating systems or versions of the same operating system.

Name

Type

Description

cx_tx_segments

Counter

Total TCP segments transmitted

cx_rx_segments

Counter

Total TCP segments received

cx_tx_data_segments

Counter

Total TCP segments with a non-zero data length transmitted

cx_rx_data_segments

Counter

Total TCP segments with a non-zero data length received

cx_tx_retransmitted_segments

Counter

Total TCP segments retransmitted

cx_tx_unsent_bytes

Gauge

Bytes which Envoy has sent to the operating system which have not yet been sent

cx_tx_unacked_segments

Gauge

Segments which have been transmitted that have not yet been acknowledged

cx_tx_percent_retransmitted_segments

Histogram

Percent of segments on a connection which were retransmistted

cx_rtt_us

Histogram

Smoothed round trip time estimate in microseconds

cx_rtt_variance_us

Histogram

Estimated variance in microseconds of the round trip time. Higher values indicated more variability.