vmstat输出项

文章由LinuxBoy分享于2019-03-24 04:03:04热评（377）

vmstat输出项

# vmstat 1

procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----

r b swpd free buff cache si so bi bo in cs us sy id wa

1 0 252 1566792 310940 5117772 0 0 2 101 1 11 2 0 97 0

0 0 252 1566784 310940 5117776 0 0 0 0 4836 10015 1 0 100 0

0 0 252 1566784 310940 5117776 0 0 0 0 4880 10070 0 0 100 0

0 0 252 1566784 310940 5117776 0 0 0 0 4952 10137 0 0 100 0

1 0 252 1566784 310940 5117776 0 0 0 36 5056 10222 0 0 100 0

0 0 252 1566784 310940 5117776 0 0 0 0 4996 10220 0 0 100 0

0 0 252 1566784 310940 5117776 0 0 0 0 5128 10443 0 1 99 0

0 0 252 1566784 310940 5117776 0 0 0 0 5150 10368 0 0 100 0

0 0 252 1566784 310940 5117776 0 0 0 0 5132 10423 0 1 100 0

0 0 252 1566784 310940 5117776 0 0 0 0 5127 10380 0 0 100 0

0 0 252 1566784 310940 5117776 0 0 0 4 5212 10485 0 0 100 0

1 0 252 1566784 310940 5117776 0 0 0 16 5270 10530 0 0 99 1

1 0 252 1566784 310940 5117780 0 0 0 0 5329 10615 0 0 100 0

1 0 252 1566784 310940 5117800 0 0 0 0 4998 10316 1 0 99 0

1 0 252 1566784 310940 5117800 0 0 0 0 5013 10213 0 0 100 0</span>

man vmstat:

[cpp]

<span style="font-size:18px;">FIELD DESCRIPTION FOR VM MODE

Procs

r: The number of processes waiting for run time.(运行进程数）

b: The number of processes in uninterruptible sleep.（阻塞进程数）

Memory

swpd: the amount of virtual memory used.

free: the amount of idle memory.

buff: the amount of memory used as buffers.（用于写操作的虚拟内存）

cache: the amount of memory used as cache. （用于读操作的虚拟内存）

inact: the amount of inactive memory. (-a option)

active: the amount of active memory. (-a option)

Swap

si: Amount of memory swapped in from disk (/s).（从磁盘换入内存的大小）

so: Amount of memory swapped to disk (/s).（从内存换入磁盘的大小）

bi: Blocks received from a block device (blocks/s).

bo: Blocks sent to a block device (blocks/s).

System

in: The number of interrupts per second, including the clock.

cs: The number of context switches per second.

CPU

These are percentages of total CPU time.

us: Time spent running non-kernel code. (user time, including nice time)（用户占用CPU)

sy: Time spent running kernel code. (system time)(系统占用CPU）

id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.（空闲CPU）

wa: Time spent waiting for IO. Prior to Linux 2.5.41, included in idle. （等待I/O所花的时间）

st: Time stolen from a virtual machine. Prior to Linux 2.6.11, unknown.

FIELD DESCRIPTION FOR DISK MODE

Reads

total: Total reads completed successfully

merged: grouped reads (resulting in one I/O)

sectors: Sectors read successfully

ms: milliseconds spent reading

Writes

total: Total writes completed successfully

merged: grouped writes (resulting in one I/O)

sectors: Sectors written successfully

ms: milliseconds spent writing

cur: I/O in progress

s: seconds spent for I/O

FIELD DESCRIPTION FOR DISK PARTITION MODE

reads: Total number of reads issued to this partition

read sectors: Total read sectors for partition

writes : Total number of writes issued to this partition

requested writes: Total number of write requests made for partition

FIELD DESCRIPTION FOR SLAB MODE

cache: Cache name

num: Number of currently active objects

total: Total number of available objects

size: Size of each object

pages: Number of pages with at least one active object

NOTES

vmstat does not require special permissions.

These reports are intended to help identify system bottlenecks. Linux vmstat does not count itself as a running process.

All linux blocks are currently 1024 bytes. Old kernels may report blocks as 512 bytes, 2048 bytes, or 4096 bytes.

Since procps 3.1.9, vmstat lets you choose units (k, K, m, M) default is K (1024 bytes) in the default mode

vmstat uses slabinfo 1.1 FIXME

FILES

/proc/meminfo

/proc/stat

/proc/*/stat

vmstat输出项