linux虚拟文件系统proc
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Linux根目录下的/proc是系统的虚拟文件系统。其结构如下：
/proc ----1/ |---2/ |...(一系列以进程PID命名的文件夹) |---bus/ 该文件夹下存放总线设备 |---driver/ |---fs/ |---irq/ |---net/ |---scsi/ |---sys/ |---sysvipc/ |---tty/ | |---一些系统文件/proc下目录
/proc/N目录
该系列目录存放对应PID的进程信息
- /proc/N/cmdline 进程启动命令
# cat /proc/1/cmdline init#/proc/N/cwd 链接到进程当前工作目录
/proc/N/environ 进程环境变量列表
# cat /proc/1/environ HOME=/TERM=linux# - /proc/N/exe 链接到进程的执行命令文件
//不可查看/proc/N/fd 包含进程相关的所有的文件描述符
/proc/N/maps 与进程相关的内存映射信息
[root@F12 ~]# cat /proc/1/maps0047e000-0049c000 r-xp 00000000 fd:00 226878 /lib/ld-2.11.2.so0049c000-0049d000 r--p 0001d000 fd:00 226878 /lib/ld-2.11.2.so0049d000-0049e000 rw-p 0001e000 fd:00 226878 /lib/ld-2.11.2.so004a0000-00612000 r-xp 00000000 fd:00 226879 /lib/libc-2.11.2.so00612000-00613000 ---p 00172000 fd:00 226879 /lib/libc-2.11.2.so00613000-00615000 r--p 00172000 fd:00 226879 /lib/libc-2.11.2.so00615000-00616000 rw-p 00174000 fd:00 226879 /lib/libc-2.11.2.so00616000-00619000 rw-p 00000000 00:00 0 00fd9000-00fda000 r-xp 00000000 00:00 0 [vdso]08048000-08069000 r-xp 00000000 fd:00 138093 /sbin/init08069000-0806b000 rw-p 00020000 fd:00 138093 /sbin/init089f3000-08a1e000 rw-p 00000000 00:00 0 [heap]b78a5000-b78a6000 rw-p 00000000 00:00 0 b78c5000-b78c6000 rw-p 00000000 00:00 0 bfd94000-bfda9000 rw-p 00000000 00:00 0 [stack]/proc/N/mem 指代进程持有的内存，不可读
/proc/N/root 链接到进程的根目录
/proc/N/stat 进程的状态
# cat /proc/1/stat1 (init) S 0 1 1 0 -1 4194560 111 6470671 0 0 0 561 19557 17854 20 0 1 0 10 2035712 89 2147483647 4194304 4677084 2144513120 2144512032 722244372 0 0 0 25280519 2147745052 0 0 0 0 0 0 0 0 0- /proc/N/statm 进程使用的内存的状态
# cat /proc/1/statm497 89 73 118 0 252 0- /proc/N/status 进程状态信息，比stat/statm更具可读性
# cat /proc/1/status Name: initState: S (sleeping)Tgid: 1Pid: 1PPid: 0TracerPid: 0Uid: 0 0 0 0Gid: 0 0 0 0FDSize: 32Groups:VmPeak: 1988 kBVmSize: 1988 kBVmLck: 0 kBVmHWM: 356 kBVmRSS: 356 kBVmData: 872 kBVmStk: 136 kBVmExe: 472 kBVmLib: 476 kBVmPTE: 16 kBVmSwap: 0 kBThreads: 1SigQ: 0/435SigPnd: 00000000000000000000000000000000ShdPnd: 00000000000000000000000000000000SigBlk: 00000000000000000000000000000000SigIgn: 00000000000000000000000000000000SigCgt: 0000000000000000000000000181c007CapInh: 0000000000000000CapPrm: ffffffffffffffffCapEff: fffffffffffffeffCapBnd: ffffffffffffffffCpus_allowed: 1Cpus_allowed_list: 0voluntary_ctxt_switches: 62nonvoluntary_ctxt_switches: 2/proc/bus目录
该目录存放一些系统总线相关信息，如：pic、usb设备
/proc/driver目录
该目录存放设备驱动，如rtc
/proc/fs目录
文件系统信息
/proc/irq目录
中断请求设备信息
/proc/net目录
网络设备
/proc/net/dev 显示网络适配器及统计信息/proc/scsi目录
scsi设备信息
/proc/tty目录
tty设备信息
/proc下文件
/proc/buddyinfo
每个内存区中的每个order有多少块可用，和内存碎片问题有关
[root@F12 ~]# cat /proc/buddyinfoNode 0, zone DMA 21 16 20 15 8 0 0 0 0 1 0 Node 0, zone Normal 4244 4360 120 3 3 1 1 1 1 0 0 Node 0, zone HighMem 417 3 1 3 2 0 0 0 0 0 0 /proc/cmdline
启动时传递给kernel的参数信息
[root@F12 ~]# cat /proc/cmdlinero root=/dev/mapper/vg_f12-lv_root nomodeset LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet# cat /proc/cmdline console=ttyS1,57600n8 root=/dev/ram0 console=ttyS0/proc/cpuinfo
cpu的信息
# cat /proc/cpuinfo system type : MT7620processor : 0cpu model : MIPS 24Kc V5.0BogoMIPS : 386.04wait instruction : yesmicrosecond timers : yestlb_entries : 32extra interrupt vector : yeshardware watchpoint : yes, count: 4, address/irw mask: [0x0004, 0x0a1c, 0x0ff8, 0x0973]ASEs implemented : mips16 dspshadow register sets : 1core : 0VCED exceptions : not availableVCEI exceptions : not available/proc/crypto
内核使用的所有已安装的加密密码及细节
[root@F12 ~]# cat /proc/cryptoname : stdrngdriver : krngmodule : kernelpriority : 200refcnt : 1selftest : passedtype : rngseedsize : 0name : crc32cdriver : crc32c-genericmodule : kernelpriority : 100refcnt : 1selftest : passedtype : shashblocksize : 1digestsize : 4descsize : 4name : sha1driver : sha1-genericmodule : kernelpriority : 0refcnt : 1selftest : passedtype : shashblocksize : 64digestsize : 20descsize : 92name : md5driver : md5-genericmodule : kernelpriority : 0refcnt : 1selftest : passedtype : shashblocksize : 64digestsize : 16descsize : 88/proc/devices
已经加载的设备并分类
[root@F12 ~]# cat /proc/devices Character devices: 1 mem 4 /dev/vc/0 4 tty 4 ttyS 5 /dev/tty 5 /dev/console 5 /dev/ptmx 7 vcs 10 misc 13 input 21 sg 29 fb 81 video4linux 99 ppdev128 ptm136 pts162 raw180 usb189 usb_device202 cpu/msr203 cpu/cpuid250 hidraw251 usbmon252 bsg253 pcmcia254 rtcBlock devices: 1 ramdisk 2 fd259 blkext 7 loop 8 sd 9 md 11 sr 65 sd 66 sd 67 sd 68 sd 69 sd 70 sd 71 sd128 sd129 sd130 sd131 sd132 sd133 sd134 sd135 sd253 device-mapper254 mdp/proc/dma
已注册使用的ISA DMA频道列表
[root@F12 ~]# cat /proc/dma 2: floppy 4: cascade/proc/execdomains
Linux内核当前支持的execution domains
[root@F12 ~]# cat /proc/execdomains0-0 Linux [kernel]/proc/fb
帧缓冲设备列表，包括数量和控制它的驱动
/proc/filesystems
内核当前支持的文件系统类型
[root@F12 ~]# cat /proc/filesystems nodev sysfsnodev rootfsnodev bdevnodev procnodev cgroupnodev cpusetnodev binfmt_miscnodev debugfsnodev securityfsnodev sockfsnodev usbfsnodev pipefsnodev anon_inodefsnodev tmpfsnodev inotifyfsnodev devpts ext3 ext4 ext4devnodev ramfsnodev hugetlbfs iso9660nodev mqueuenodev selinuxfsnodev vmhgfsnodev fuse fuseblknodev fusectlnodev rpc_pipefsnodev nfsd/proc/interrupts
x86架构中的每个IRQ中断数
[root@F12 ~]# cat /proc/interrupts CPU0 CPU1 0: 2523 0 IO-APIC-edge timer 1: 9 59587 IO-APIC-edge i8042 3: 0 1 IO-APIC-edge 4: 1 0 IO-APIC-edge 6: 2 3 IO-APIC-edge floppy 7: 0 0 IO-APIC-edge parport0 8: 1 0 IO-APIC-edge rtc0 9: 0 0 IO-APIC-fasteoi acpi 12: 101 414159 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge ata_piix 15: 2052469 3722477 IO-APIC-edge ata_piix 16: 0 0 IO-APIC-fasteoi ehci_hcd:usb1 17: 663267 137 IO-APIC-fasteoi ioc0 18: 60 6412 IO-APIC-fasteoi uhci_hcd:usb2 19: 6 1132951 IO-APIC-fasteoi eth7 24: 0 0 PCI-MSI-edge pciehp 25: 0 0 PCI-MSI-edge pciehp 26: 0 0 PCI-MSI-edge pciehp 27: 0 0 PCI-MSI-edge pciehp 28: 0 0 PCI-MSI-edge pciehp 29: 0 0 PCI-MSI-edge pciehp 30: 0 0 PCI-MSI-edge pciehp 31: 0 0 PCI-MSI-edge pciehp 32: 0 0 PCI-MSI-edge pciehp 33: 0 0 PCI-MSI-edge pciehp 34: 0 0 PCI-MSI-edge pciehp 35: 0 0 PCI-MSI-edge pciehp 36: 0 0 PCI-MSI-edge pciehp 37: 0 0 PCI-MSI-edge pciehp 38: 0 0 PCI-MSI-edge pciehp 39: 0 0 PCI-MSI-edge pciehp 40: 0 0 PCI-MSI-edge pciehp 41: 0 0 PCI-MSI-edge pciehp 42: 0 0 PCI-MSI-edge pciehp 43: 0 0 PCI-MSI-edge pciehp 44: 0 0 PCI-MSI-edge pciehp 45: 0 0 PCI-MSI-edge pciehp 46: 0 0 PCI-MSI-edge pciehp 47: 0 0 PCI-MSI-edge pciehp 48: 0 0 PCI-MSI-edge pciehp 49: 0 0 PCI-MSI-edge pciehp 50: 0 0 PCI-MSI-edge pciehp 51: 0 0 PCI-MSI-edge pciehp 52: 0 0 PCI-MSI-edge pciehp 53: 0 0 PCI-MSI-edge pciehp 54: 0 0 PCI-MSI-edge pciehp 55: 0 0 PCI-MSI-edge pciehp 56: 3 0 PCI-MSI-edge vmci 57: 0 0 PCI-MSI-edge vmci NMI: 0 0 Non-maskable interrupts LOC: 28580837 13167838 Local timer interrupts SPU: 0 0 Spurious interrupts CNT: 0 0 Performance counter interrupts PND: 0 0 Performance pending work RES: 1661910 3545173 Rescheduling interrupts CAL: 130 198 Function call interrupts TLB: 71869 54124 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts MCE: 0 0 Machine check exceptions MCP: 2338 2338 Machine check polls ERR: 0 MIS: 0/proc/iomem
每个物理设备当前在系统内存中的映射
# cat /proc/iomem 00000000-03ffffff : System RAM 00000000-004c5ff3 : Kernel code 004c5ff4-005bceff : Kernel data101c0000-101c0fff : rt3xxx-ehci 101c0000-101c0fff : ehci_hcd101c1000-101c1fff : rt3xxx-ohci 101c1000-101c1fff : ohci_hcd20000000-2fffffff : PCI MEM1 20000000-200fffff : PCI Bus 0000:01 20000000-200fffff : 0000:01:00.0 20100000-201fffff : PCI Bus 0000:01 20100000-2010ffff : 0000:01:00.0 20200000-2020ffff : 0000:00:00.0b0130000-b0133fff : mtk-sd.0 b0130000-b0133fff : mtk-sd/proc/ioports
一个设备的输入输出所使用的注册端口范围
[root@F12 t11]# cat /proc/ioports0000-001f : dma10020-0021 : pic10040-0043 : timer00050-0053 : timer10060-0060 : keyboard0064-0064 : keyboard0070-0071 : rtc00080-008f : dma page reg00a0-00a1 : pic200c0-00df : dma200f0-00ff : fpu0170-0177 : 0000:00:07.1 0170-0177 : ata_piix01f0-01f7 : 0000:00:07.1 01f0-01f7 : ata_piix02f8-02ff : serial0376-0376 : 0000:00:07.1 0376-0376 : ata_piix0378-037a : parport003c0-03df : vga+03f2-03f2 : floppy03f4-03f5 : floppy03f6-03f6 : 0000:00:07.1 03f6-03f6 : ata_piix03f7-03f7 : floppy03f8-03ff : serial0cf0-0cf1 : pnp 00:010cf8-0cff : PCI conf11000-103f : 0000:00:07.3 1000-103f : pnp 00:01 1000-1003 : ACPI PM1a_EVT_BLK 1004-1005 : ACPI PM1a_CNT_BLK 1008-100b : ACPI PM_TMR 100c-100f : ACPI GPE0_BLK 1010-1015 : ACPI CPU throttle1040-104f : 0000:00:07.3 1040-104f : pnp 00:011060-106f : 0000:00:07.1 1060-106f : ata_piix1070-107f : 0000:00:0f.01080-10bf : 0000:00:07.7 1080-10bf : vmci1400-14ff : 0000:00:10.02000-3fff : PCI Bus 0000:02 2000-207f : 0000:02:01.0 2000-2063 : vmxnet ether 2080-209f : 0000:02:00.0 2080-209f : uhci_hcd4000-4fff : PCI Bus 0000:035000-5fff : PCI Bus 0000:0b6000-6fff : PCI Bus 0000:137000-7fff : PCI Bus 0000:1b8000-8fff : PCI Bus 0000:049000-9fff : PCI Bus 0000:0ca000-afff : PCI Bus 0000:14b000-bfff : PCI Bus 0000:1cc000-cfff : PCI Bus 0000:05d000-dfff : PCI Bus 0000:0de000-efff : PCI Bus 0000:15fce0-fcff : pnp 00:0d/proc/kcore
代表系统的物理内存，存储为核心文件格式，里边显示的是字节数，等于RAM大小加上4kb
/proc/kmsg
记录内核生成的信息，可以通过/sbin/klogd或/bin/dmesg来处理
/proc/loadavg
根据过去一段时间内CPU和IO的状态得出的负载状态，与uptime命令有关
[root@F12 t11]# cat /proc/loadavg 0.00 0.00 0.00 2/272 32516/proc/locks
内核锁住的文件列表
[root@F12 t11]# cat /proc/locks1: POSIX ADVISORY WRITE 31359 fd:00:206094 0 EOF2: POSIX ADVISORY WRITE 31357 fd:00:206093 0 EOF3: POSIX ADVISORY READ 26544 fd:00:201571 4 44: POSIX ADVISORY READ 26544 fd:00:201340 4 45: POSIX ADVISORY WRITE 15874 fd:00:206363 0 EOF6: POSIX ADVISORY WRITE 15874 fd:00:206362 0 EOF7: POSIX ADVISORY WRITE 15874 fd:00:206345 0 EOF8: POSIX ADVISORY READ 1751 fd:00:201340 4 49: POSIX ADVISORY WRITE 1741 fd:00:133258 0 EOF10: POSIX ADVISORY READ 1719 fd:00:201552 4 411: POSIX ADVISORY READ 1719 fd:00:201551 4 412: POSIX ADVISORY READ 1719 fd:00:201550 4 413: POSIX ADVISORY READ 1719 fd:00:201549 4 414: POSIX ADVISORY READ 1719 fd:00:201340 4 415: POSIX ADVISORY WRITE 1719 fd:00:206101 0 016: POSIX ADVISORY WRITE 1596 fd:00:206095 0 EOF17: FLOCK ADVISORY WRITE 1209 fd:00:133492 0 EOF18: FLOCK ADVISORY WRITE 1093 fd:00:132755 0 EOF/proc/mdstat
多硬盘，RAID配置信息(md=multiple disks)
[root@F12 t11]# cat /proc/mdstat Personalities : unused devices: <none>/proc/meminfo
RAM使用的相关信息
[root@F12 t11]# cat /proc/meminfo MemTotal: 1027080 kBMemFree: 56404 kBBuffers: 240168 kBCached: 413020 kBSwapCached: 1836 kBActive: 457168 kBInactive: 328708 kBActive(anon): 12500 kBInactive(anon): 124352 kBActive(file): 444668 kBInactive(file): 204356 kBUnevictable: 0 kBMlocked: 0 kBHighTotal: 141256 kBHighFree: 672 kBLowTotal: 885824 kBLowFree: 55732 kBSwapTotal: 2621432 kBSwapFree: 2604048 kBDirty: 8 kBWriteback: 0 kBAnonPages: 131308 kBMapped: 42752 kBSlab: 164156 kBSReclaimable: 139156 kBSUnreclaim: 25000 kBPageTables: 7284 kBNFS_Unstable: 0 kBBounce: 0 kBWritebackTmp: 0 kBCommitLimit: 3134972 kBCommitted_AS: 801660 kBVmallocTotal: 122880 kBVmallocUsed: 3488 kBVmallocChunk: 110284 kBHugePages_Total: 0HugePages_Free: 0HugePages_Rsvd: 0HugePages_Surp: 0Hugepagesize: 2048 kBDirectMap4k: 10232 kBDirectMap2M: 897024 kB/proc/misc
其他的主要设备(设备号为10)上注册的驱动
[root@F12 t11]# cat /proc/misc 229 fuse 57 vsock223 uinput 58 vmci 59 network_throughput 60 network_latency 61 cpu_dma_latency 62 device-mapper175 agpgart144 nvram228 hpet231 snapshot227 mcelog 63 vga_arbiter/proc/modules
所有加载到内核的模块列表
[root@F12 t11]# cat /proc/modules gspca_zc3xx 44648 0 - Live 0xf7eff000gspca_main 19556 1 gspca_zc3xx, Live 0xf7ee9000videodev 30160 1 gspca_main, Live 0xf7e78000v4l1_compat 12312 1 videodev, Live 0xf7e68000ipt_MASQUERADE 2788 1 - Live 0xf8a49000iptable_nat 6068 1 - Live 0xf8a3b000nf_nat 18008 2 ipt_MASQUERADE,iptable_nat, Live 0xf8a2c000bridge 43992 0 - Live 0xf89c3000stp 1988 1 bridge, Live 0xf89af000llc 4960 2 bridge,stp, Live 0xf89a5000nfsd 209700 1 - Live 0xf8968000lockd 59892 1 nfsd, Live 0xf891c000nfs_acl 2488 1 nfsd, Live 0xf8904000auth_rpcgss 31160 1 nfsd, Live 0xf88f4000exportfs 3736 1 nfsd, Live 0xf88e6000sunrpc 158388 5 nfsd,lockd,nfs_acl,auth_rpcgss, Live 0xf88b6000ipv6 239428 28 - Live 0xf8824000fuse 52712 4 - Live 0xf87ad000vmhgfs 43276 1 - Live 0xf878d000vsock 37540 0 - Live 0xf85f1000vmmemctl 10896 0 - Live 0xf84cb000dm_multipath 14472 0 - Live 0xf7e72000uinput 6852 0 - Live 0xf7e55000ppdev 8200 0 - Live 0xf7e39000vmci 63396 2 vmhgfs,vsock, Live 0xf82b8000parport_pc 22748 0 - Live 0xf8176000parport 29300 2 ppdev,parport_pc, Live 0xf815e000i2c_piix4 11968 0 - Live 0xf814a000i2c_core 23160 2 videodev,i2c_piix4, Live 0xf8138000vmxnet 16620 0 - Live 0xf7ee2000mptspi 15640 2 - Live 0xf7eb7000mptscsih 26692 1 mptspi, Live 0xf7eae000mptbase 71816 2 mptspi,mptscsih, Live 0xf7e83000scsi_transport_spi 19500 1 mptspi, Live 0xf7e61000floppy 47700 0 - Live 0xf7e47000/proc/mounts
系统中使用的所有挂载
# cat /proc/mounts rootfs / rootfs rw 0 0proc /proc proc rw,relatime 0 0none /var ramfs rw,relatime 0 0none /dev ramfs rw,relatime 0 0none /etc ramfs rw,relatime 0 0none /tmp ramfs rw,relatime 0 0none /media ramfs rw,relatime 0 0none /sys sysfs rw,relatime 0 0devpts /dev/pts devpts rw,relatime,mode=600 0 0mdev /dev ramfs rw,relatime 0 0devpts /dev/pts devpts rw,relatime,mode=600 0 0/dev/mmcblk0p1 /media/mmcblk0p1 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096 0 0/dev/mmcblk0p1 /etc_ro/lighttpd/www/avres fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096 0 0/proc/mtrr
系统使用的Memory Type Range Registers (MTRRs)
[root@F12 t11]# cat /proc/mtrrreg00: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back/proc/partitions
分区中的块分配信息
[root@F12 t11]# cat /proc/partitions major minor #blocks name 8 0 134217728 sda 8 1 204800 sda1 8 2 134010211 sda2 253 0 131387392 dm-0 253 1 2621440 dm-1/proc/pci
系统中的PCI设备列表
/proc/slabinfo
系统中所有活动的 slab 缓存信息
# cat /proc/slabinfo slabinfo - version: 2.1# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail>bridge_fdb_cache 3 113 32 113 1 : tunables 120 60 0 : slabdata 1 1 0fib6_nodes 16 113 32 113 1 : tunables 120 60 0 : slabdata 1 1 0ip6_dst_cache 20 30 256 15 1 : tunables 120 60 0 : slabdata 2 2 0ndisc_cache 5 24 160 24 1 : tunables 120 60 0 : slabdata 1 1 0RAWv6 4 6 640 6 1 : tunables 54 27 0 : slabdata 1 1 0.../proc/stat
所有的CPU活动信息
# cat /proc/stat cpu 73845 0 114281 51302017 8 0 100151 0 0 0cpu0 73845 0 114281 51302017 8 0 100151 0 0 0intr 180814944 0 0 0 1018318 50103427 128966359 0 0 0 0 0 0 726488 0 198 0 0 153 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0ctxt 9002115btime 0processes 412041procs_running 1procs_blocked 0softirq 178599504 45918244 128965137 169327 1416824 0 0 709525 0 0 1420447/proc/sysrq-trigger
使用echo命令来写这个文件的时候，远程root用户可以执行大多数的系统请求关键命令，就好像在本地终端执行一样。要写入这个文件，需要把/proc/sys/kernel/sysrq不能设置为0。这个文件对root也是不可读的
/proc/uptime
系统已经运行了多久
[root@F12 t11]# cat /proc/uptime708666.58 1377324.62/proc/swaps
交换空间的使用情况
[root@F12 t11]# cat /proc/swaps Filename Type Size Used Priority/dev/mapper/vg_f12-lv_swap partition 2621432 17384 -1/proc/version
Linux内核版本和gcc版本
[root@F12 t11]# cat /proc/version Linux version 2.6.31.5-127.fc12.i686.PAE (mockbuild@x86-3.fedora.phx.redhat.com) (gcc version 4.4.2 20091027 (Red Hat 4.4.2-7) (GCC) ) #1 SMP Sat Nov 7 21:25:57 EST 2009# cat /proc/version Linux version 2.6.36 (root@F12) (gcc version 3.4.2) #25 Wed Dec 30 15:01:16 CST 2015/proc/ide
ide设备信息
/proc/vmstat
虚拟内存统计信息
# cat /proc/vmstat nr_free_pages 6646nr_inactive_anon 0nr_active_anon 458nr_inactive_file 3165nr_active_file 1151nr_unevictable 0nr_mlock 0nr_anon_pages 464nr_mapped 314nr_file_pages 4316nr_dirty 0nr_writeback 0nr_slab_reclaimable 1135nr_slab_unreclaimable 1658nr_page_table_pages 65nr_kernel_stack 40nr_unstable 0nr_bounce 0nr_vmscan_write 0nr_writeback_temp 0nr_isolated_anon 0nr_isolated_file 0nr_shmem 0/proc/vmcore
内核panic时的内存映像
/proc/diskstats
取得磁盘信息
[root@F12 ~]# cat /proc/diskstats 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 11 0 sr0 0 0 0 0 0 0 0 0 0 0 0 2 0 fd0 0 0 0 0 0 0 0 0 0 0 0 8 0 sda 636497 21176 11405890 12839819 140760 431327 4408732 15069993 0 3733362 27908407 8 1 sda1 233 1502 5844 1427 7 1 28 5 0 713 1432 8 2 sda2 636236 19577 11399046 12837936 119761 431326 4408704 15069485 0 3732777 27906038 253 0 dm-0 654545 0 11391458 13532637 546908 0 4371216 66773885 0 3711632 80307161 253 1 dm-1 835 0 6680 9963 4686 0 37488 484596 0 28949 494559# cat /proc/diskstats 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 31 0 mtdblock0 0 0 0 0 0 0 0 0 0 0 0 31 1 mtdblock1 0 0 0 0 0 0 0 0 0 0 0 31 2 mtdblock2 0 0 0 0 0 0 0 0 0 0 0 31 3 mtdblock3 0 0 0 0 0 0 0 0 0 0 0 31 4 mtdblock4 0 0 0 0 0 0 0 0 0 0 0 179 0 mmcblk0 56 1633 2610 144 3 0 0 0 0 124 144 179 1 mmcblk0p1 40 1624 2485 128 0 0 0 0 0 108 128/proc/schedstat
kernel调度器的统计信息
[root@F12 ~]# cat /proc/schedstat version 15timestamp 709068549cpu0 24934 0 36895770 14884682 20338545 18793633 6426725307833 2621805225292 21933940domain0 00000003 1364787 1323284 31537 81322500 10813 1234 385 1322899 412323 412001 95 1488417 277 3 1 412000 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1397074 110223 8843cpu1 39083 0 36999115 11842635 22273051 20875974 5978531477970 3210542306167 25106143domain0 00000003 1608334 1592831 9886 37120190 6146 620 11 1592820 59350 58963 115 835677 319 4 0 58963 0 0 0 0 0 0 0 0 146 3 143 0 0 0 0 0 0 1544912 90561 7684/proc/zoneinfo
显示内存空间的统计信息，对分析虚拟内存行为很有用
# cat /proc/zoneinfo Node 0, zone Normal pages free 6649 min 512 low 640 high 768 scanned 0 spanned 16384 present 16256 nr_free_pages 6649 nr_inactive_anon 0 nr_active_anon 457 nr_inactive_file 3165 nr_active_file 1151 nr_unevictable 0 nr_mlock 0 nr_anon_pages 464 nr_mapped 314 nr_file_pages 4316 nr_dirty 0 nr_writeback 0 nr_slab_reclaimable 1135 nr_slab_unreclaimable 1654 nr_page_table_pages 66 nr_kernel_stack 40 nr_unstable 0 nr_bounce 0 nr_vmscan_write 0 nr_writeback_temp 0 nr_isolated_anon 0 nr_isolated_file 0 nr_shmem 0 protection: (0, 0) pagesets cpu: 0 count: 3 high: 18 batch: 3 all_unreclaimable: 0 start_pfn: 0 inactive_ratio: 1/proc/self 链接到当前正在运行的进程
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