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What is the best tools for performance data gathering and analysis?

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Operating Systems Linux Red Hat What is the best tools for performance data gathering and analysis?
# 1  
Old 09-21-2011
What is the best tools for performance data gathering and analysis?
Dear Guru,

IHAC who complaint that his CentOS is getting performance issue.

I have to help him out of there.

Could you please tell me which tools is better to gathering the whole system performance data?

-- CPU/Memory/IO(disk & Network)/swap

I would like the tools could be used to generate the report base on the performance data we gathered by that tools.

Thanks a lot!
David Feng
# 2  
Old 09-21-2011
You can start with built-in tool: SAR - How To Monitor A System With Sysstat On Centos 4.3 | HowtoForge - Linux Howtos and Tutorials
# 3  
Old 09-21-2011
Use top, vmstat command for the start point, for network you can use wireshark or tcpdump command, or even if you want to examine network security nmap command.
# 4  
Old 09-21-2011
Most tools covered already, the only ones I'd add are netstat and iostat
# 5  
Old 09-21-2011
Any have tried sysstat or dstat and have successful case? I'm wondering if I could get the more readable report from those tools.
# 6  
Old 12-20-2011
have you tried nmon? it works in both unix and linux platforms
# 7  
Old 12-21-2011
Alternately, if you feel as though SAR makes you uncomfortable, you could load the info into Ksar and get better data and graphs. Or you can use one of many tools such as:

Nagios
Hyperic
ZenOSS
Zabbix

I have used and like Hyperic.
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