How to check how much memory a docker container takes up

In docker, you can use the stats command to check how much memory the container occupies. The "MEM USAGE / LIMI" column indicates the total memory being used by the container and the total amount of memory allowed to be used. The syntax is " docker stats".

The operating environment of this tutorial: linux7.3 system, docker-1.13.1 version, Dell G3 computer.

How to check how much memory a docker container occupies

Use the docker stats command to check the memory of the container, but sometimes the data obtained by the docker stats command may be accurate. You can refer to the following method

First find the container id of the container through docker ps -a

Then use ps -ef to find the process corresponding to the container

After obtaining the pid corresponding to the container, you can use top, pmap, Use ps and other commands to view process memory to check the memory usage of the container

top

top -p 5140

Content explanation

PID: ID of the process

USER: Process owner

PR: The priority level of the process, the smaller the priority, the priority will be executed

NInice: Value

VIRT: occupied by the process Virtual memory

RES: The physical memory occupied by the process

SHR: The shared memory used by the process

S: The status of the process. S means sleeping, R means running, Z means zombie state, N means the priority value of the process is a negative number

%CPU: The usage rate of the CPU occupied by the process

%MEM: The physics used by the process Percentage of memory and total memory

TIME: The total CPU time occupied by the process after it is started, that is, the accumulated value of the CPU usage time.

COMMAND: Process startup command name

Examples are as follows:

Among them:

Recommended learning: "docker video tutorial"

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