Htop of performance monitoring of Linux system

Brief introduction:

• Htop is an interactive process browser under Linux that can be used to replace the top command under Linux;

• is an interactive process viewer in a Linux system, a text-mode application (in the console or X terminal) that requires ncurses;

Compared to top, Htop has the following advantages:

• You can scroll through the list of processes horizontally or vertically to see all the processes and the complete command line.

• On startup, it's faster than top.

• Process number is not required to kill the process.

• Htop supports mouse operation.

• Top is already very old.

Htop Parameters:

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/6C/2D/wKiom1VBiYDjf_dOAAgUWGehR88583.jpg "title=" QQ picture 20150430094622.jpg "Width=" "height=" 460 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:750px;height:460px; Float:left, "alt=" wkiom1vbiydjf_doaaguwgehr88583.jpg "/> above the upper left corner of the CPU, memory, swap area usage, the right display tasks, load, boot time, the following is the process of real-time status.

• PID: Identification number of the

• User: Users running this process

• PRI: Priority of the process

• NI: The priority value of the process, which is 0 by default, can be adjusted

• VIRT: Virtual memory value for process consumption

• RES: The physical memory value that the process occupies

• SHR: Shared memory value for process consumption

• S: Health of the process, R for running, s for hibernation, waiting to wake up, Z for zombie state

• %CPU: CPU usage consumed by this process

• %MEM: The percentage of physical memory and total memory that the process occupies

• Time+: Total CPU Time after the process is started

• Command: Start command name for process startup

  
  

The following is the function of F1~F10 and the corresponding letter shortcut keys.

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/6C/2E/wKiom1VBikvynJ8cAAJhKsvInGE619.jpg "title=" Qq20150430094920.png "width=" 740 "height=" 301 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:740PX;HEIGHT:301PX; "alt = "Wkiom1vbikvynj8caajhksvinge619.jpg"/>

Command-line option (Command-Line options)

• -C--no-color using a monochrome color scheme

• -D--delay=delay Setting delay update time in seconds

• -H--help Display htop command Help information

• -U--user=username only shows a procedure for a given user

• -P--pid=pid,pid ... Show only the given PIDs

• -S--sort-key column to sort by

• -v–version displaying version information

Interactive commands (INTERACTIVE COMMANDS)

• Up and down keys or PgUp, PgDn Select the desired process;

• key around or Home, End move the field, or you can select the process directly with the mouse;

• Space Mark/Unmark a process. Commands can be used for multiple processes, such as "kill", to be applied to all flagged processes

• U Unmark All Processes

• s Select a process, press S: System call to trace a process with strace

• L show files opened by the process: if Lsof is installed, press this key to display the files opened by the process

• I Reverses the sort order, and if the sort is a positive order, it is reversed in reverse and vice versa

• a Set CPU affinity: Flag which CPUs a process is allowed to use. (on machines with multiple processors)

• u Show specific user processes

• M Sort by memory usage

• P Sort by CPU usage

• T use Sort by time+

• F Trace Process: If the sort order causes the selected process to move around the list, let the selected bar follow the process. This is useful for monitoring a process, and in this way you can keep a process visible on the screen. Using the arrow keys will stop the function.

• K Show/Hide Kernel threads

• H Show/Hide User threads

• ctrl-l Refresh

• Numbers PID Lookup: Input PID, the cursor will be moved to the corresponding process

This article from "Guangzhou, Rain People" blog, please be sure to keep this source http://liulihuan.blog.51cto.com/8018739/1640759

Htop of performance monitoring of Linux system