command is a command and rtacct nstat utility SNMP counter and the network interface monitoring the status of a simple kernel.
grammar
nstat / rtacct (option)
Options
-h: displays help information;
-V: show version command information;
-z: counter shows 0;
-r: Clear History Statistics;
-n: Do not display anything, only update history;
-a: displays the absolute value of the counter;
-s: do not update history;
-d: a way daemon running this command.
Examples
[root@localhost ~]# nstat
#kernel
IpInReceives 15766482 0.0
IpInDelivers 15538384 0.0
IpOutRequests 9746938 0.0
IpReasmReqds 8 0.0
IpReasmOKs 4 0.0
IcmpInErrors 28701 0.0
IcmpInDestUnreachs 405 0.0
IcmpInTimeExcds 1812 0.0
IcmpInParmProbs 173 0.0
IcmpInEchoReps 26613 0.0
IcmpInTimestamps 100 0.0
IcmpOutErrors 27065 0.0
IcmpOutTimeExcds 331 0.0
IcmpOutEchoReps 121 0.0
IcmpOutTimestamps 26613 0.0
IcmpMsgInType0 100 0.0
IcmpMsgInType3 1812 0.0
IcmpMsgInType8 26613 0.0
IcmpMsgInType11 173 0.0
IcmpMsgOutType0 26613 0.0
IcmpMsgOutType3 331 0.0
IcmpMsgOutType8 121 0.0
TcpActiveOpens 24760 0.0
TcpPassiveOpens 573863 0.0
TcpAttemptFails 18347 0.0
TcpEstabResets 67353 0.0
TcpInSegs 15324047 0.0
TcpOutSegs 9296351 0.0
TcpRetransSegs 118479 0.0
TcpInErrs 560 0.0
TcpOutRsts 15269 0.0
UdpInDatagrams 185,300 0.0
UdpNoPorts 331 0.0
UdpOutDatagrams 305043 0.0
TcpExtSyncookiesFailed 14328 0.0
TcpExtEmbryonicRsts 15116 0.0
TcpExtOutOfWindowIcmps 79 0.0
TcpExtTW 158436 0.0
TcpExtDelayedACKs 123597 0.0
TcpExtDelayedACKLocked 1087 0.0
TcpExtDelayedACKLost 55670 0.0
TcpExtTCPPrequeued 288438 0.0
TcpExtTCPDirectCopyFromBacklog 11229302 0.0
TcpExtTCPDirectCopyFromPrequeue 669949 0.0
TcpExtTCPHPHits 7539804 0.0
TcpExtTCPHPHitsToUser 7700 0.0
TcpExtTCPPureAcks 2743573 0.0
TcpExtTCPHPAcks 1742135 0.0
TcpExtTCPRenoRecovery 51 0.0
TcpExtTCPSackRecovery 15556 0.0
TcpExtTCPSACKReneging 13 0.0
TcpExtTCPFACKReorder 199 0.0
TcpExtTCPSACKReorder 63 0.0
TcpExtTCPTSReorder 220 0.0
TcpExtTCPFullUndo 213 0.0
TcpExtTCPPartialUndo 868 0.0
TcpExtTCPDSACKUndo 2831 0.0
TcpExtTCPLossUndo 2320 0.0
TcpExtTCPLoss 22652 0.0
TcpExtTCPLostRetransmit 2 0.0
TcpExtTCPRenoFailures 26 0.0
TcpExtTCPSackFailures 4765 0.0
TcpExtTCPLossFailures 2155 0.0
TcpExtTCPFastRetrans 28636 0.0
TcpExtTCPForwardRetrans 3341 0.0
TcpExtTCPSlowStartRetrans 25393 0.0
TcpExtTCPTimeouts 28215 0.0
TcpExtTCPRenoRecoveryFail 26 0.0
TcpExtTCPSackRecoveryFail 2892 0.0
TcpExtTCPDSACKOldSent 55916 0.0
TcpExtTCPDSACKOfoSent 299 0.0
TcpExtTCPDSACKRecv 11680 0.0
TcpExtTCPDSACKOfoRecv 35 0.0
TcpExtTCPAbortOnData 1193 0.0
TcpExtTCPAbortOnClose 14 0.0
TcpExtTCPAbortOnTimeout 3041 0.0