Linux View CPU memory network traffic disk IO

Source: Internet
Author: User
Tags cpu usage

Use the Vmstat command to view system resource conditions

How do I see CPU, Memory usage, network traffic, and disk I/O in command line mode?

Q: How can I view CPU, memory usage, network traffic and disk I/O in command line mode?

A: In the command line mode,

1. Commands to view CPU usage

Refreshes every 5 seconds with data on the right-most CPU occupancy

$ vmstat 5

Top then press Shift+p to sort by process processor occupancy

$ top

2. Commands to view memory usage

View memory usage with the free command

$ free

Top and then press Shift+m to sort by process memory usage

$ top

3. View network traffic

You can use tools Iptraf tools

$ iptraf-g

Network traffic for a interface can be obtained by comparing the RX and TX data of two time network interfaces

$ date; Ifconfig eth1

$ date; Ifconfig eth1

4. View disk I/O

Use Iostat to see disk I/O for disk/DEV/SDC3, refreshed every two seconds

$ iostat-d-X/DEV/SDC3 2

View the IO section information with Vmstat

Linux view CPU, memory, hard disk

1 Viewing CPUs

1.1 Viewing the number of CPUs

# Cat/proc/cpuinfo | grep "Physical ID" | Uniq | Wc-l

Uniq command: Delete duplicate rows; wc–l command: Count rows * *

1.2 Viewing CPU Cores

# Cat/proc/cpuinfo | grep "CPU Cores" | Uniq

CPU Cores:4

1.3 View CPU Models

# Cat/proc/cpuinfo | grep ' model name ' |uniq

Model Name:intel (R) Xeon (r) CPU E5630 @ 2.53GHz

Summary: The server has 2 4-core CPUs, Model Intel (R) Xeon (r) CPU E5630 @ 2.53GHz

2 Viewing memory

2.1 View Total Memory

#cat/proc/meminfo | grep memtotal

memtotal:32941268 KB//Memory 32G

3 Viewing the hard drive

3.1 Viewing hard disk size

# Fdisk-l | grep Disk

disk/dev/cciss/c0d0:146.7 GB, 146778685440 bytes

Summary: Hard disk size 146.7G, that is, the factory trademark 160G

Linux View CPU memory network traffic disk IO

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.