interface_stats_*

interface_stats_*

The interface_stats_* tables store statistical metrics about communications over each active interface for a Greenplum Database instance.

These tables are in place for future use and are not currently populated.

There are three interface_stats tables, all having the same columns:

  • interface_stats_now is an external table whose data files are stored in $MASTER_DATA_DIRECTORY/gpperfmon/data.
  • interface_stats_tail is an external table whose data files are stored in $MASTER_DATA_DIRECTORY/gpperfmon/data. This is a transitional table for statistical interface metrics that has been cleared from interface_stats_now but has not yet been committed to interface_stats_history. It typically only contains a few minutes worth of data.
  • interface_stats_history is a regular table that stores statistical interface metrics. It is pre-partitioned into monthly partitions. Partitions are automatically added in one month increments as needed.
Column Type Description
interface_name string Name of the interface. For example: eth0, eth1, lo.
bytes_received bigint Amount of data received in bytes.
packets_received bigint Number of packets received.
receive_errors bigint Number of errors encountered while data was being received.
receive_drops bigint Number of times packets were dropped while data was being received.
receive_fifo_errors bigint Number of times FIFO (first in first out) errors were encountered while data was being received.
receive_frame_errors bigint Number of frame errors while data was being received.
receive_compressed_packets int Number of packets received in compressed format.
receive_multicast_packets int Number of multicast packets received.
bytes_transmitted bigint Amount of data transmitted in bytes.
packets_transmitted bigint Amount of data transmitted in bytes.
packets_transmitted bigint Number of packets transmitted.
transmit_errors bigint Number of errors encountered during data transmission.
transmit_drops bigint Number of times packets were dropped during data transmission.
transmit_fifo_errors bigint Number of times fifo errors were encountered during data transmission.
transmit_collision_errors bigint Number of times collision errors were encountered during data transmission.
transmit_carrier_errors bigint Number of times carrier errors were encountered during data transmission.
transmit_compressed_packets int Number of packets transmitted in compressed format.