1. netstat -as
-a
Show the state of all sockets. Without -a, sockets used by server processes aren’t shown
-s
Show per-protocol statistics. If this option is repeated, counters with a value of zero are suppressed.
2. netstat -as
tcp:
163471 packets sent
163346 data packets (2574999 bytes)
0 data packets (0 bytes) retransmitted
89 ack-only packets (18036 delayed)
0 URG only packets
0 window probe packets
20 window update packets
16 control packets
0 send attempts resulted in self-quench
181384 packets received
163374 acks (for 2575033 bytes)
14 duplicate acks
0 acks for unsent data
18052 packets (2008708 bytes) received in-sequence
5 completely duplicate packets (0 bytes)
0 old duplicate packets
0 packets with some dup. data (0 bytes duped)
0 out-of-order packets (0 bytes)
0 packets (0 bytes) of data after window
0 window probes
0 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
0 connection requests
20 connection accepts
20 connections established (including accepts)
16 connections closed (including 2 drops)
0 embryonic connections dropped
0 delayed frees of tcpcb
163374 segments updated rtt (of 163351 attempts)
0 retransmit timeouts
0 connections dropped by rexmit timeout
0 persist timeouts (resulting in 0 dropped connections)
2 keepalive timeouts
0 keepalive probes sent
2 connections dropped by keepalive
145113 correct ACK header predictions
17971 correct data packet header predictions
40 PCB hash misses
0 dropped due to no socket
0 connections drained due to memory shortage
0 PMTUD blackholes detected
0 bad connection attempts
20 SYN cache entries added
0 hash collisions
20 completed
0 aborted (no space to build PCB)
0 timed out
0 dropped due to overflow
0 dropped due to bucket overflow
0 dropped due to RST
0 dropped due to ICMP unreachable
0 delayed free of SYN cache entries
0 dropped due to response limit
0 SYN,ACKs retransmitted
0 duplicate SYNs received for entries already in the cache
0 SYNs dropped (no route or no space)
0 packets with bad signature
0 packets with good signature
0 sucessful ECN handshakes
0 packets with ECN CE bit
0 packets ECN ECT(0) bit
udp:
43449 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
7856 dropped due to no socket
2740 broadcast/multicast datagrams dropped due to no socket
0 dropped due to full socket buffers
32853 delivered
40378 PCB hash misses
29788 datagrams output
ip:
327695 total packets received
0 bad header checksums
0 with size smaller than minimum
0 with data size < data length
0 with length > max ip packet size
0 with header length < data size
0 with data length < header length
0 with bad options
0 with incorrect version number
0 fragments received
0 fragments dropped (dup or out of space)
0 fragments dropped (out of ipqent)
0 malformed fragments dropped
0 fragments dropped after timeout
0 packets reassembled ok
234667 packets for this host
0 packets for unknown/unsupported protocol
0 packets forwarded (0 packets fast forwarded)
93028 packets not forwardable
0 redirects sent
0 packets no matching gif found
201135 packets sent from this host
1962 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
0 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can’t be fragmented
0 datagrams with bad address in header
icmp:
7856 calls to icmp_error
0 errors not generated because old message was icmp
Output histogram:
destination unreachable: 7856
0 messages with bad code fields
0 messages < minimum length
0 bad checksums
0 messages with bad length
Input histogram:
echo reply: 1962
destination unreachable: 7856
0 message responses generated
0 path MTU changes
0 Broadcast/Multicast echo requests ignored
0 Broadcast/Multicast timestamp requests ignored
igmp:
0 messages received
0 messages received with too few bytes
0 messages received with bad checksum
0 membership queries received
0 membership queries received with invalid field(s)
0 membership reports received
0 membership reports received with invalid field(s)
0 membership reports received for groups to which we belong
4 membership reports sent
(Fast) IPsec:
0 no SA found (output)
0 no memory available (output)
0 no route available (output)
0 generic errors (output)
0 bundled SA processed (output)
0 SPD cache lookups
0 SPD cache misses
IPsec ah:
0 ah input packets processed
0 ah output packets processed
0 ah headers too short
0 ah headers for unsupported address family
0 ah packets with no SA
0 ah packets dropped by crypto returning NULL mbuf
0 ah packets with bad authentication
0 ah packets with no xform
0 ah packets dropped due to queue full
0 ah packets dropped for replay counter wrap
0 ah packets dropped for possible replay
0 ah packets dropped for bad authenticator length
0 ah packets with an invalid SA
0 ah packets too big
0 ah packets blocked due to policy
0 ah failed crypto requests
0 ah tunnel sanity check failures
ah histogram:
0 ah bytes received
0 ah bytes transmitted
IPsec esp:
0 esp input packets processed
0 esp output packets processed
0 esp headers too short
0 esp headers for unsupported address family
0 esp packets with no SA
0 esp packets dropped by crypto returning NULL mbuf
0 esp packets dropped due to queue full
0 esp packets with no xform
0 esp packets with bad ilen
0 esp packets with bad encryption
0 esp packets with bad authentication
0 esp packets dropped for replay counter wrap
0 esp packets dropped for possible replay
0 esp packets with an invalid SA
0 esp packets too big
0 esp packets blocked due to policy
0 esp failed crypto requests
0 esp tunnel sanity check failures
esp histogram:
0 esp bytes received
0 esp bytes transmitted
IPsec ipip:
0 ipip total input packets
0 ipip total output packets
0 ipip packets too short for header length
0 ipip packets dropped due to queue full
0 ipip packets blocked due to policy
0 ipip IP spoofing attempts
0 ipip protocol family mismatched
0 ipip missing tunnel-endpoint address
0 ipip input bytes received
0 ipip output bytes processed
IPsec ipcomp:
0 ipcomp packets too short for header length
0 ipcomp protocol family not supported
0 ipcomp not db
0 ipcomp packets dropped by crypto returning NULL mbuf
0 ipcomp queue full
0 ipcomp no support for transform
0 ipcomp packets dropped for replay counter wrap
0 ipcomp input IPcomp packets
0 ipcomp output IPcomp packets
0 ipcomp specified an invalid TDB
0 ipcomp packets decompressed as too big
0 ipcomp packets blocked due to policy
0 ipcomp failed crypto requests
IPcomp histogram:
0 ipcomp input bytes
0 ipcomp output bytes
ip6:
235 total packets received
0 with size smaller than minimum
0 with data size < data length
0 with bad options
0 with incorrect version number
0 fragments received
0 fragments dropped (dup or out of space)
0 fragments dropped after timeout
0 fragments that exceeded limit
0 packets reassembled ok
0 packets for this host
0 packets forwarded
235 packets not forwardable
0 redirects sent
33 packets sent from this host
0 packets sent with fabricated ip header
0 output packets dropped due to no bufs, etc.
0 output packets discarded due to no route
0 output datagrams fragmented
0 fragments created
0 datagrams that can’t be fragmented
0 packets that violated scope rules
235 multicast packets which we don’t join
Input packet histogram:
hop by hop: 62
UDP: 144
ICMP6: 29
Mbuf statistics:
0 one mbufs
235 one ext mbufs
0 two or more ext mbufs
0 packets whose headers are not continuous
0 tunneling packets that can’t find gif
0 packets discarded due to too many headers
0 failures of source address selection
0 forward cache hit
0 forward cache miss
icmp6:
0 calls to icmp6_error
0 errors not generated because old message was icmp6 or so
0 errors not generated because of rate limitation
Output packet histogram:
multicast listener report: 30
neighbor solicitation: 3
0 messages with bad code fields
0 messages < minimum length
0 bad checksums
0 messages with bad length
Histogram of error messages to be generated:
0 no route
0 administratively prohibited
0 beyond scope
0 address unreachable
0 port unreachable
0 packet too big
0 time exceed transit
0 time exceed reassembly
0 erroneous header field
0 unrecognized next header
0 unrecognized option
0 redirect
0 unknown
0 message responses generated
0 messages with too many ND options
0 messages with bad ND options
0 bad neighbor solicitation messages
0 bad neighbor advertisement messages
0 bad router solicitation messages
0 bad router advertisement messages
0 bad redirect messages
0 path MTU changes
tcp6:
163515 packets sent
163390 data packets (2583829 bytes)
0 data packets (0 bytes) retransmitted
89 ack-only packets (18036 delayed)
0 URG only packets
0 window probe packets
20 window update packets
16 control packets
0 send attempts resulted in self-quench
181428 packets received
163418 acks (for 2583863 bytes)
14 duplicate acks
0 acks for unsent data
18052 packets (2008708 bytes) received in-sequence
5 completely duplicate packets (0 bytes)
0 old duplicate packets
0 packets with some dup. data (0 bytes duped)
0 out-of-order packets (0 bytes)
0 packets (0 bytes) of data after window
0 window probes
0 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
0 connection requests
20 connection accepts
20 connections established (including accepts)
16 connections closed (including 2 drops)
0 embryonic connections dropped
0 delayed frees of tcpcb
163418 segments updated rtt (of 163395 attempts)
0 retransmit timeouts
0 connections dropped by rexmit timeout
0 persist timeouts (resulting in 0 dropped connections)
2 keepalive timeouts
0 keepalive probes sent
2 connections dropped by keepalive
145113 correct ACK header predictions
17971 correct data packet header predictions
40 PCB hash misses
0 dropped due to no socket
0 connections drained due to memory shortage
0 PMTUD blackholes detected
0 bad connection attempts
20 SYN cache entries added
0 hash collisions
20 completed
0 aborted (no space to build PCB)
0 timed out
0 dropped due to overflow
0 dropped due to bucket overflow
0 dropped due to RST
0 dropped due to ICMP unreachable
0 delayed free of SYN cache entries
0 dropped due to response limit
0 SYN,ACKs retransmitted
0 duplicate SYNs received for entries already in the cache
0 SYNs dropped (no route or no space)
0 packets with bad signature
0 packets with good signature
0 sucessful ECN handshakes
0 packets with ECN CE bit
0 packets ECN ECT(0) bit
udp6:
0 datagrams received
0 with incomplete header
0 with bad data length field
0 with bad checksum
0 with no checksum
0 dropped due to no socket
0 multicast datagrams dropped due to no socket
0 dropped due to full socket buffers
0 delivered
0 datagrams output
(Fast) IPsec6:
0 no SA found (output)
0 no memory available (output)
0 no route available (output)
0 generic errors (output)
0 bundled SA processed (output)
0 SPD cache lookups
0 SPD cache misses
pim6:
0 messages received
0 messages received with too few bytes
0 messages received with bad checksum
0 messages received with bad version
0 registers received
0 bad registers received
0 registers sent
rip6:
0 messages received
0 checksum calculations on inbound
0 messages with bad checksum
0 messages dropped due to no socket
0 multicast messages dropped due to no socket
0 messages dropped due to full socket buffers
0 delivered
0 datagrams output
arp:
15 packets sent
0 reply packets
15 request packets
25819 packets received
12 reply packets
25807 valid request packets
25807 broadcast/multicast packets
0 packets with unknown protocol type
0 packets with bad (short) length
0 packets with null target IP address
0 packets with null source IP address
0 could not be mapped to an interface
0 packets sourced from a local hardware address
0 packets with a broadcast source hardware address
0 duplicates for a local IP address
0 attempts to overwrite a static entry
0 packets received on wrong interface
0 entrys overwritten
0 changes in hardware address length
1 packet deferred pending ARP resolution
1 sent
0 dropped
0 failures to allocate llinfo
2.netstat -m
-m
Show statistics recorded by the memory-management routines (the network manages a private pool of memory buffers).
参考https://www.qnx.com/developers/docs/7.1/index.html#com.qnx.doc.neutrino.utilities/topic/n/netstat.html
3. on -p 200 tracelogger -w -s3 -f /dev/shmem/tracelogger.kev**
-s num
The number of seconds to log for. The default is 0, specifying an unlimited duration.
-w
Log wide events; the default is to log fast events. For more information, see “Fast and wide modes” in the “Events and the Kernel” chapter of the System Analysis Toolkit User’s Guide.
参考：https://www.qnx.com/developers/docs/7.1/index.html#com.qnx.doc.neutrino.utilities/topic/t/tracelogger.html
先slay 32786 (tracelogger) 不让会busy
4. dumper -d $path_of _coredump_file -p $pid_of_iopkt**
-d path
The directory in which to place dumps. The default is the home directory of user that started the process, or /tmp if none.
-p pid
Save a dump file for this process immediately, and then exit dumper.
参考：
https://www.qnx.com/developers/docs/7.1/index.html#com.qnx.doc.neutrino.utilities/topic/d/dumper.html
# pidin | grep io-pkt
32792 1 bin/io-pkt-v6-hc 21r SIGWAITINFO
32792 2 bin/io-pkt-v6-hc 10r RECEIVE 2
32792 3 bin/io-pkt-v6-hc 21r RECEIVE 20
32792 4 bin/io-pkt-v6-hc 10r RECEIVE 24
32792 5 bin/io-pkt-v6-hc 10r RECEIVE 23
32792 6 bin/io-pkt-v6-hc 21r CONDVAR (0x3710d2de8)
32792 7 bin/io-pkt-v6-hc 10r RECEIVE 28
32792 8 bin/io-pkt-v6-hc 10r RECEIVE 27
32792 9 bin/io-pkt-v6-hc 21r CONDVAR (0x3710d7368)
32792 10 bin/io-pkt-v6-hc 21r RECEIVE 34
32792 11 bin/io-pkt-v6-hc 10r RECEIVE 36
32792 12 bin/io-pkt-v6-hc 10r RECEIVE 38
32792 13 bin/io-pkt-v6-hc 10r RECEIVE 40
32792 14 bin/io-pkt-v6-hc 22r NANOSLEEP
32792 15 bin/io-pkt-v6-hc 10r RECEIVE 42
32792 16 bin/io-pkt-v6-hc 21r RECEIVE 44
32792 17 bin/io-pkt-v6-hc 10r RECEIVE 46
32792 18 bin/io-pkt-v6-hc 10r RECEIVE 48
5. dumper -d $path_of _coredump_file -p 32792
pidin -F “%a %b %p %N %h %J %B %f %F %l”
