Shulou(Shulou.com)06/02 Report--

Collection of performance monitoring tools

Performance Monitoring tool set (vmstat,dstat,htop,top,iotop,sar,iostat,iftop,netlog,glances,lm_sersors)

I. vmstat

Vmstat Virtual memory tool

Vmstat refresh time refresh times

Procs: process

R: the number of processes waiting to run and the length of tasks waiting to run on the CPU.

B: the number of processes in uninterruptible sleep, the length of blocked queues

Memory:

Swpd: total swap memory usage

Free: free physical memory

Buffer: total memory for buffer

Cache: for total memory in cache

Swap:

Si: the rate at which data enters the swap kb/s

So: the speed at which data leaves the swap kb/s

Io

The speed at which bi reads data from the block device to the system kb/s

Speed at which bo saves data to block devices kb/s

System

In: interrupt rate

Cs: Inter-process switching rate, context switching

Cpu

Us

Sy

Id

Wa

St

Option

-s: memory statistics

-d hard disk information

-n displays header information only once

-S k | m | g specify unit size

II. Dstat

Dstat very exquisite system viewing tool, very powerful, so powerful that there are no friends.

Dstat refresh time refresh times

Option

-c display information related to cpu

-d display data related to the hard disk

-g memory page data

-m memory related data

-n network card related data

-p is related to the process

-r shows IO correlation

-s shows swap correlation

-- tcp

-- udp

-- raw

-- socket

-- ipc

-- top-cpu

-- top-io

-- top-mem

-- top-lantency

III. Htop,top

IV. Iotop

-o: only processes with io operations are displayed

-b: batch display, no interaction, mainly used to record to files.

-n NUM: displays NUM times, mainly for non-interactive mode.

-d SEC: displays every SEC second.

Commonly used: iotop-b-o-n 3-k

5. Ifstat,iftop

VI. Glances,lm_sensors

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