Need System Monitoring Tools for Linux

[WinSlayer]

Hi all,

I am using Linux operating system in my office server. I need some basic monitoring tool that works on finding out bottlenecks, Disk bottlenecks, CPU and memory bottlenecks and Network bottlenecks. Can anybody suggest me for good tool for monitor Linux server performance? Thanks and regards.

[Lillebror]

The top program gives a dynamic real-time view of a running system i.e. real process activity. By default, it display the most CPU-intensive tasks running on the server and updates the list every five seconds. The commands are follows:

t- For Displays summary information off and on.
m- For show memory information off and on.
A-For type the display by top consumers of various system resources.
f- For go into an interactive configuration screen for top.
o- For enables you to interactively select the ordering within top.
r-For issues renice command.
k-For Issues kill command.

[jesse]

The command vmstat also reports information about processes, memory, paging, block IO, traps, and CPU activity on the Linux server. If you want to display Memory Utilization Slabinfo, Then type the command :

vmstat -m

If you want to information About Active / Inactive Memory Pages, type the command

# vmstat -a

Best of luck.

[SalVatore]

You can also find out who is logged on and what they are doing by w command on the Linux operating system. It can displays information about the users at present on the machine, and their processes. The command list are below. Check and reply for more command:

 w username
 w ABC

[Dr. V]

You can also find out uptime of system and check how long the system has been running.The uptime command can be used to observe how long the server has been running. The current time, how long the system has been running, the system load averages for the past 1, 5, and 15 minutes and how many users are currently logged on. The command are

 uptime

You can also observer the process by Ps command. Check and reply.

[Devasis]

If you want to find Out the Top 10 Memory Consuming Process, type the command

ps -auxf | sort -nr -k 4 | head -10

If you want to find Out top 10 CPU Consuming Process, type the command

 ps -auxf | sort -nr -k 3 | head -10

If you want to displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel. Type the command:

 free