order
vmstat
-
Report statistics of virtual memory. vmstat
About the process of the system, memory usage, exchange pages and
Input-output
Block usage, interrupts, and
cpu
Use statistics and report corresponding information. memory
swpd:
Virtual memory usage, in KBfree:
Available memory in KBbuff:
The amount of memory used as cache, in KB.si:
Number of pages swapped from disk to memory in KB/ sec, so:
The number of pages swapped from memory to disk, in KB/ sec. run quickly
vmstat
No special permission is required.
These system information are used to provide users with information to analyze system bottlenecks. Linux will not run when calculating the process situation.
vmstat
Do the math yourself.
Vmstat monitors the virtual memory, processes and CPU activities of the system, and it also summarizes the number of disks and forks and VFWorks operations.
The disadvantage is that vmstat can't deeply analyze a process, but can only analyze the overall situation of the system.
For example: [Angel @ Home]
/Angel] #
vmstat
procs
memory
exchange
superorthicon
system
cpu
r
b
w
swpd
free
amateur
stash
The seventh note of the major scale
therefore
Bisexual
pah
exist
cesium (Cs)
we
Syria
Identification (identification)
7 180
1852
56092
48400
six
five
24
eight
18
These include:
Procs
r:
Number of processes waiting to run
B:
Number of processes in uninterrupted sleep state
Female:
The number of runnable processes that have been swapped out.
memory
swpd:
Virtual memory usage (KB)
Free:
Available memory, KB
Pale yellow:
The amount of memory used as a cache, in KB.
exchange
si:
The number of pages swapped from disk to memory, in KB/ sec.
So:
The number of pages swapped from memory to disk, in KB/ sec.
Image orthographic tube
bi:
Number of blocks sent to the block device, unit: blocks/second.
Bo:
Number of blocks received from the block device, unit: blocks/second.
system
At:
The number of interrupts per second, including clock interrupts.
cs:
The number of environment (context) switches per second.
cpu
according to
cpu
The total usage percentage that will be displayed.
United States:
cpu
Use time
Sai:
cpu
System service time
id:
idle time