January 19, 2016

文件系统/proc

man proc可以查看/proc下文件的介绍。部分详细的信息在Document/ 下的文档。

/proc/stat

内容如下：

cpu  2303587 581 429836 17770999 23613 6 3208 0 0 0
cpu0 295930 14 54832 2211637 3243 0 460 0 0 0
cpu1 290937 7 53366 2219764 2343 0 339 0 0 0
cpu2 286404 398 54243 2222236 3039 0 400 0 0 0
cpu3 289395 56 53009 2221468 2625 0 355 0 0 0
cpu4 287492 65 54035 2221863 2796 0 389 0 0 0
cpu5 283755 12 53378 2226847 2756 0 352 0 0 0
cpu6 284510 12 54328 2223049 3263 0 390 0 0 0
cpu7 285162 13 52642 2224133 3546 1 521 0 0 0
intr 90553713 131 3 0 0 0 0 0 1 1 0 0 0 3 0 0 0 2263 3 172382 258726 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 69 2048202 1465341 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 114753645
btime 1395311332
processes 527044
procs_running 2
procs_blocked 0
softirq 53396993 13 36920330 4298 2049696 258348 0 182581 1762075 72888 12146764

/proc/uptime

内容如下：

25864.56 179317.80
  • 第一个字段：系统启动时间
  • 第二个字段：CPU空闲时间，所有CPU的空闲时间之和

/proc/loadavg

内容如下：

0.17 0.45 1.85 3/431 13306

前三个字段分别表示系统在1, 5, 15分钟内的负载，负载是根据进程队列和磁盘IO等待计算得到。其值与uptime输出的平均负载值。

第四个字段，“/”前面的数字表示当前正在运行的进程，线程数；后面的数字表示当前内核调度队列中的进程数。

最后一个字段为最近创建进程的PID。

/proc/diskstats

内容如下：

  1       0 ram0 0 0 0 0 0 0 0 0 0 0 0
  1       1 ram1 0 0 0 0 0 0 0 0 0 0 0
  1       2 ram2 0 0 0 0 0 0 0 0 0 0 0
  1       3 ram3 0 0 0 0 0 0 0 0 0 0 0
  1       4 ram4 0 0 0 0 0 0 0 0 0 0 0
  1       5 ram5 0 0 0 0 0 0 0 0 0 0 0
  1       6 ram6 0 0 0 0 0 0 0 0 0 0 0
  1       7 ram7 0 0 0 0 0 0 0 0 0 0 0
  1       8 ram8 0 0 0 0 0 0 0 0 0 0 0
  1       9 ram9 0 0 0 0 0 0 0 0 0 0 0
  1      10 ram10 0 0 0 0 0 0 0 0 0 0 0
  1      11 ram11 0 0 0 0 0 0 0 0 0 0 0
  1      12 ram12 0 0 0 0 0 0 0 0 0 0 0
  1      13 ram13 0 0 0 0 0 0 0 0 0 0 0
  1      14 ram14 0 0 0 0 0 0 0 0 0 0 0
  1      15 ram15 0 0 0 0 0 0 0 0 0 0 0
  7       0 loop0 0 0 0 0 0 0 0 0 0 0 0
  7       1 loop1 0 0 0 0 0 0 0 0 0 0 0
  7       2 loop2 0 0 0 0 0 0 0 0 0 0 0
  7       3 loop3 0 0 0 0 0 0 0 0 0 0 0
  7       4 loop4 0 0 0 0 0 0 0 0 0 0 0
  7       5 loop5 0 0 0 0 0 0 0 0 0 0 0
  7       6 loop6 0 0 0 0 0 0 0 0 0 0 0
  7       7 loop7 0 0 0 0 0 0 0 0 0 0 0
  8       0 sda 164471 79897 3068268 487297 97761 384460 18959662 6259738 0 300411 6760070
  8       1 sda1 126 110 1888 746 0 0 0 0 0 719 743
  8       2 sda2 119 110 1840 836 0 0 0 0 0 729 835
  8       3 sda3 231 6955 9560 2234 0 0 0 0 0 1692 2234
  8       4 sda4 2 0 20 199 0 0 0 0 0 199 199
  8       5 sda5 232 6969 9560 1532 0 0 0 0 0 1386 1531
  8       6 sda6 240 6984 9632 1228 0 0 0 0 0 1143 1228
  8       7 sda7 224 505 2942 1614 23 42 142 171 0 1586 1784
  8       8 sda8 81930 54409 1278120 121542 78503 380665 18713064 4852751 0 135538 4987423
  8       9 sda9 81100 3425 1750898 355434 17764 3753 246456 1378816 0 159504 1734162
  8      10 sda10 152 320 2008 919 0 0 0 0 0 881 918
  8      16 sdb 380 336 5728 494 0 0 0 0 0 433 493
  8      17 sdb1 198 216 3312 168 0 0 0 0 0 163 168
  8      18 sdb2 136 110 1968 199 0 0 0 0 0 195 199
253       0 dm-0 130 0 1040 588 0 0 0 0 0 530 588
253       1 dm-1 130 0 1040 849 0 0 0 0 0 720 849
253       2 dm-2 163 0 1304 1532 0 0 0 0 0 469 1532
253       3 dm-3 442 0 3888 1336 10 0 64 907 0 1999 2243
253       4 dm-4 135282 0 1269104 227359 474569 0 18713000 63707752 0 157087 63945996
253       5 dm-5 130 0 1040 1613 0 0 0 0 0 308 1613

/proc/meminfo

内容如下：

MemTotal:       12265380 kB
MemFree:          991860 kB
Buffers:          630796 kB
Cached:          8175496 kB
SwapCached:            0 kB
Active:          6199424 kB
Inactive:        3680280 kB
Active(anon):    1245952 kB
Inactive(anon):   127296 kB
Active(file):    4953472 kB
Inactive(file):  3552984 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:       2047996 kB
SwapFree:        2047996 kB
Dirty:               240 kB
Writeback:             0 kB
AnonPages:       1073496 kB
Mapped:           330912 kB
Shmem:            299848 kB
Slab:            1114644 kB
SReclaimable:    1016448 kB
SUnreclaim:        98196 kB
KernelStack:        3504 kB
PageTables:        20868 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     8180684 kB
Committed_AS:    3424504 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      312904 kB
VmallocChunk:   34359418620 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      154760 kB
DirectMap2M:     3995648 kB
DirectMap1G:     8388608 kB

/proc/partitions

major minor  #blocks  name

   8        0 1953514584 sda
   8        1     102400 sda1
   8        2   20377600 sda2
   8        3  102400000 sda3
   8        4          1 sda4
   8        5  102400000 sda5
   8        6  102400000 sda6
   8        7     102400 sda7
   8        8  307200000 sda8
   8        9   29294496 sda9
   8       10  200001186 sda10
   8       16  312571224 sdb
   8       17     131072 sdb1
   8       18  312438784 sdb2
 253        0    5120000 dm-0
 253        1   10240000 dm-1
 253        2    2048000 dm-2
 253        3   52428800 dm-3
 253        4   52428800 dm-4
 253        5   10485760 dm-5

/proc/cpuinfo

processor   : 0
vendor_id   : AuthenticAMD
cpu family  : 21
model               : 2
model name  : AMD FX(tm)-8320 Eight-Core Processor
stepping    : 0
microcode   : 0x6000817
cpu MHz             : 1400.000
cache size  : 2048 KB
physical id : 0
siblings    : 8
core id             : 0
cpu cores   : 4
apicid              : 16
initial apicid      : 0
fpu         : yes
fpu_exception       : yes
cpuid level : 13
wp          : yes
flags               : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1
bogomips    : 6984.54
TLB size    : 1536 4K pages
clflush size        : 64
cache_alignment     : 64
address sizes       : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro

processor   : 1
vendor_id   : AuthenticAMD
cpu family  : 21
model               : 2
model name  : AMD FX(tm)-8320 Eight-Core Processor
stepping    : 0
microcode   : 0x6000817
cpu MHz             : 1400.000
cache size  : 2048 KB
physical id : 0
siblings    : 8
core id             : 1
cpu cores   : 4
apicid              : 17
initial apicid      : 1
fpu         : yes
fpu_exception       : yes
cpuid level : 13
wp          : yes
flags               : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1
bogomips    : 6984.54
TLB size    : 1536 4K pages
clflush size        : 64
cache_alignment     : 64
address sizes       : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro

/proc/[pid]

cmdline

cwd

environ

exe

io

参考资源

Posted by LiuHui
Filed under: kernel, program
Tags: kernel, proc, devops