Metric Name |
Unit |
Description |
ListenDrops |
Connections/s |
Number of incoming connections (SYN packets) dropped for any reason |
ListenOverflows |
Occurrences/s |
Number of occurrences where the upper limit of the Accept queue is exceeded after the last step of three-way handshake is completed |
SyncookiesFailed |
Packets/s |
Number of packets received with invalid SYN Cookie information |
SyncookiesRecv |
Packets/s |
Number of packets received with valid SYN Cookie information |
SyncookiesSent |
Packets/s |
Number of SYN/ACK packets sent through SYN Cookie |
TCPAbortOnTimeout |
Connections/s |
Number of connection closed because the attempts of retransmissions of various timers (RTO/PTO/keepalive) exceed the upper limit |
TCPAbortOnData |
Sockets/s |
Number of sockets closed due to unknown data received |
TCPAbortOnClose |
Sockets/s |
Number of sockets closed when the user-mode program has data in the buffer |
TCPAbortOnMemory |
Connections/s |
Number of connections closed due to memory issues |
TCPAbortOnLinger |
Connections/s |
Number of connections suspended in lingering state after being closed |
TCPAbortFailed |
Attempts/s |
Number of failed attempts to close connection |
ActiveOpens |
Connections/s |
Number of actively established TCP connections |
CurrEstab |
Connections/s |
Number of TCP connections currently established |
ActiveOpens |
Connections/s |
Number of passively established TCP connections |
AttemptFails |
Failures/s |
Number of connection establishment failures |
EstabResets |
Connections/s |
Number of reset connections |
InSegs |
Packets/s |
Number of received packets, including erroneous ones |
OutSegs |
Packet/s |
Number of sent data packets |
RetransSegs |
Packets/s |
Number of received TCP packets |
InErrs |
Packet/s |
Number of retransmitted packets |
OutRsts |
Packet/s |
Number of sent RST packets |
RetransSegsRate |
% |
Retransmission rate at TCP layer |
ResetRate |
% |
RESET sending frequency |
InErrRate |
% |
Percentage of erroneous packets |
TW |
Sockets/s |
Number of sockets ending TIME_WAIT state after normal timeout |
TWKilled |
Sockets/s |
Number of sockets ending TIME_WAIT state through tcp_tw_recycle mechanism |
TCPTimeWaitOverflow |
Sockets/s |
Number of TIME_WAIT sockets unable to be allocated due to limit exceeding |
TWRecycled |
Sockets/s |
Number of sockets ending TIME_WAIT state through tcp_tw_reuse mechanism |
TCPTimeouts |
Timeouts/s |
Number of first RTO timer timeouts |
TCPSpuriousRTOs |
Timeouts/s |
Number of spurious timeouts detected through F-RTO mechanism |
TCPLossProbes |
Packets/s |
Number of Tail Loss Probe (TLP) packets sent due to Probe Timeout (PTO) |
TCPLossProbeRecovery |
Packets/s |
Number of lost packets just repaired by TLP probes |
TCPRenoRecoveryFail |
Connections/s |
Number of connections that enter the Recovery phase and then undergo RTO (SACK option not supported by the opposite) |
TCPSackRecoveryFail |
Connections/s |
Number of connections that enter the Recovery phase and then undergo RTO (SACK option supported by the opposite) |
TCPRenoFailures |
Failures/s |
Number of failures that enter the TCP_CA_Disorder phase and then undergo RTO (SACK option not supported by the opposite) |
TCPSackFailures |
Failures/s |
Number of failures that enter the TCP_CA_Disorder phase and then undergo RTO (SACK option supported by the opposite) |
TCPLossFailures |
Connections/s |
Number of connections that enter the TCP_CA_Loss phase and then undergo RTO timeout |
RtoAlgorithm |
Algorithms/s |
Number of delayed algorithms for forwarding unanswered objects |
RtoMax |
Retransmissions/s |
Maximum number of retransmissions due to TCP delay |
RtoMin |
Retransmissions/s |
Minimum number of retransmissions due to TCP delay |
TCPLostRetransmit |
Retransmissions/s |
Number of SKB retransmissions due to loss |
TCPFastRetrans |
Retransmissions/s |
Number of fast SKB retransmissions |
TCPForwardRetrans |
Retransmissions/s |
Number of regular SKB transmissions |
TCPSlowStartRetrans |
Retransmissions/s |
Number of SKB retransmissions with successful slow start |
TCPRetransFail |
Failures/s |
Number of failed retransmission attempts |
OutDatagrams |
Datagrams/s |
Number of sent UDP datagrams |
InDatagrams |
Datagrams/s |
Number of received UDP datagrams |
eth0-receive_bytes |
MB/s |
Volume of data received by ENI |
eth0-transmit_bytes |
MB/s |
Volume of data sent by ENI |
eth0-receive_drop |
Packets/s |
Volume of data received and then dropped by ENI |
eth0-receive_errs |
Packets/s |
Volume of data failed to be received by ENI |
eth0-transmit_drop |
Packets/s |
Volume of data sent and then dropped by ENI |
eth0-transmit_errs |
Packets/s |
Volume of data failed to be sent by ENI |
eth0-transmit_packetsl |
Packet/s |
Number of packets sent by ENI |
TCP_inuse |
- |
Number of TCP sockets in use (listening) |
TCP_orphan |
- |
Number of TCP connections waiting to be closed |
TCP_tw |
- |
Number of TCP sockets to be destroyed |
TCP_alloc |
- |
Number of TCP sockets allocated (established, sk_buff obtained) |
ESTABLISHED |
- |
Number of TCP connections in Established state |
SYN-SENT |
- |
Number of TCP connections in SYN-SENT state |
SYN-RECV |
- |
Number of TCP connections in SYN-RECV state |
FIN-WAIT1 |
- |
Number of TCP connections in FIN-WAIT1 state |
FIN-WAIT2 |
- |
Number of TCP connections in FIN-WAIT2 state |
TIME-WAIT |
- |
Number of TCP connections in TIME-WAIT state |
CLOSE |
- |
Number of TCP connections in CLOSE state |
CLOSE-WAIT |
- |
Number of TCP connections in CLOSE-WAIT state |
LAST-ACK |
- |
Number of TCP connections in LAST-ACK state |
LISTEN |
- |
Number of TCP connections in LISTEN state |
CLOSEING |
- |
Number of TCP connections in CLOSEING state |
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