Process Management Htop, Glances,dstat

1. HTOP

Purpose: For the management of processes on Linux, provide a complete list of processes, color to identify the processor, swap and memory status.

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Where F1: Help F2: Set F3: Search process F4: Incremental process F5: Tree structure display F6: Choose Sort by F7: Reduce process priority F Priority 8: Increase process F9: input signal to process, F10,: Exit Htop,

Common commands:

u: Select the process for the specified user

L: Show the list of files opened by the process

S: Shows the system calls performed by the process

A: Bind the process to the specified CPU

#: Quickly position the cursor on the specified PID process

Ctrl + L Refresh

2. Glances

1. Use: is a cross-platform monitoring tool that can monitor CPU, load, memory, disk IO, network traffic, file system, and system temperature.

         2. Common interactive directives:

                A automatically sort the process

               c Sort by CPU usage percentage

               m by memory usage

               p Sort by process pid

               i sort by IO device

               D Show or hide disk output data

              F Show or hide file system data

n Show or hide data from the network

L Show or hide logs

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Glances-t 5 indicates a 5-second update.

3. Dstat

Purpose: Used to generate the system resource Status report = (Vmstat+iostat+netstat+nfsstat+ifstat)

The default is 1 seconds to collect-cpu-,-disk-,-net-,-paging-,-system-data

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-C Statistics CPU status

-D Statistics disk status

          -D statistics Specify disk or summary information

          -L statistics system load, including 1-minute, 5-minute, 15-minute averages

          -M statistical system physical memory usage

          -s statistics swap used and remaining amount

          -N Statistics network usage

          -R statistical I/O requests, including read-write requests

          -P statistics process information, including runnable, uninterruptible, new

          -y statistics System Information

          -T display statistics time

        --TOP-CPU View CPU usage process

--top-mem viewing the most occupied processes

To view the maximum IO and CPU:

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Process Management Htop, Glances,dstat