FIELD DESCRIPTION FOR VM MODE
Procs
r: The number of processes waiting for run time.
表示运行队列,就是说多少个进程真的分配到CPU
b: The number of processes in uninterruptible sleep.
阻塞的进程数
Memory
swpd: the amount of virtual memory used.
free: the amount of idle memory.
buff: the amount of memory used as buffers.
cache: the amount of memory used as cache.
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). 从内存换到磁盘的大小
IO
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)
sy: Time spent running kernel code. (system time)
id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.
wa: Time spent waiting for IO. Prior to Linux 2.5.41, included in idle.
st: Time stolen from a virtual machine. Prior to Linux 2.6.11, unknown.
[oracle@june ~]$ vmstat 1 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
15 0 90432 12384 103336 475724 1 1 143 126 45 51 5 5 88 2 0
8 0 90432 15036 103336 475724 0 0 4 8 1008 277 24 76 0 0 0
15 0 90432 11472 103336 475728 0 0 56 68 1552 461 24 76 0 0 0
13 1 90432 16732 103344 475740 0 0 52 276 1189 386 21 79 0 0 0
15 0 90432 34044 103344 475740 0 0 32 60 1041 312 14 86 0 0 0
13 0 90432 26852 103344 475748 0 0 24 4 1013 248 24 76 0 0 0
13 0 90432 18668 103344 475748 0 0 4 4 1018 274 28 72 0 0 0
14 1 90432 13832 103344 475756 0 0 68 48 1244 360 16 84 0 0 0
15 1 90432 20900 103348 475752 0 0 28 304 1027 328 19 81 0 0 0
14 1 90432 28092 103348 475768 0 0 44 16 1021 274 17 83 0 0 0