procfs

https://www.kernel.org/doc/Documentation/filesystems/proc.txt

/proc/stat

cpu  493610 1050 955506 6140203935 227807 123 11036 0 0 0

cpu0 268666 64 334886 766935020 173591 1 398 0 0 0

cpu1 24279 70 87536 767591499 2804 0 329 0 0 0

cpu2 33643 371 94465 767576953 30516 19 1826 0 0 0

cpu3 35103 290 96698 767576504 2218 14 1323 0 0 0

cpu4 33836 45 97270 767592684 7115 29 2499 0 0 0

cpu5 37121 71 79464 767637237 3542 15 1788 0 0 0

cpu6 34686 62 80201 767680609 4734 35 1927 0 0 0

cpu7 26274 73 84983 767613424 3283 7 943 0 0 0

intr .......

ctxt 704806375

btime 1445592652

processes 67671

procs_running 1

procs_blocked 0

softirq 495681725 11 161892896 3202428 164102325 1327096 0 8948996 145284138 416950 10506885

cpu

user: normal processes executing in user mode
nice: niced processes executing in user mode
system: processes executing in kernel mode
idle: twiddling thumbs
iowait: waiting for I/O to complete
irq: servicing interrupts
softirq: servicing softirqs
steal: involuntary wait
guest: running a normal guest
guest_nice: running a niced guest

/proc/net/tcp

sl  local_address rem_address   st tx_queue rx_queue tr tm->when retrnsmt   uid  timeout inode

   0: 00000000:006F 00000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 13811 1 ffff880226d36d40 299 0 0 2 -1

   1: 00000000:0050 00000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 1729006482 1 ffff880111027640 299 0 0 2 -1

   2: 00000000:0035 00000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 14961 1 ffff8802282de0c0 299 0 0 2 -1

   3: 00000000:0016 00000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 111764978 1 ffff880237e1f1c0 299 0 0 2 -1

   4: 0100007F:0019 00000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 15277 1 ffff8804296d3500 299 0 0 2 -1

   5: 00000000:1622 00000000:0000 0A 00000000:00000000 00:00000000 00000000   497        0 2936653873 1 ffff880261576e00 299 0 0 2 -1

   6: E20A140A:63CD A2751DDA:0050 01 00000000:00000000 00:00000000 00000000     0        0 2864810710 1 ffff880001856980 371 4 8 10 7

   7: E20A140A:6687 A2751DDA:0050 01 000000BC:00000000 01:00000083 00000000     0        0 2864841200 2 ffff880261435900 131 0 0 10 7

   8: E20A140A:F722 A2751DDA:0050 08 00000000:00000001 00:00000000 00000000     0        0 2839562255 1 ffff8804296d2180 23 3 0 10 7

0: 00000000:006F 00000000:0000 0A

* number of entry

* local IPv4 address

* local TCP port number

* remote IPv4 address

* remote TCP port number

* connection state

00000000:00000000 00:00000000 00000000

* transmit-queue

* receive-queue

* timer_active (see below)

* number of jiffies until timer expires

* number of unrecovered RTO timeouts

0        0 13811 1 ffff880226d36d40 299 0 0 2 -1

* uid

* unanswered 0-window probes

* inode

* socket reference count

* location of socket in memory

* retransmit timeout

* (delayed ACK control data)

* Predicted tick of soft clock

* (ack.quick<<1)|ack.pingpong

* sending congestion window

* is >= 0xFFFF

* or -1 if the treshold

* slow start size threshold

/proc/net/udp

  sl  local_address rem_address   st tx_queue rx_queue tr tm->when retrnsmt   uid  timeout inode ref pointer drops

   9: 00000000:1F94 00000000:0000 07 00000000:00000000 00:00000000 00000000    99        0 1569496407 2 ffff8802264aeb00 0

  40: 00000000:0333 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 13810 2 ffff8802264af800 0

  42: 00000000:0035 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 14960 2 ffff88022830dbc0 0

 100: 00000000:006F 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 13806 2 ffff8802264afb40 0

00  "ERROR_STATUS",

01  "ESTABLISHED",

02  "SYN_SENT",

03  "SYN_RECV",

04  "FIN_WAIT1",

05  "FIN_WAIT2",

06  "TIME_WAIT",

07  "CLOSE",

08  "CLOSE_WAIT",

09  "LAST_ACK",

0A  "LISTEN",

0B  "CLOSING",

巴特西

procfs

/proc/stat

/proc/net/tcp

/proc/net/udp

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