Linux operating systems offer the user excellent administrator tool for monitoring the system. I am not referring to the desktop gadget, but several tools that provide server administrator can understand any performance issues, and deploying the most appropriate corrective action.
The founder of the software and certainly the best known is top, which only a good idea about the status of CPU and RAM:
But tuning of complex hardware and software infrastructure the availability of fast CPUs and lots of RAM is not everything, in fact, the performance is often influenced by the capacity of the machine to read and write information on the storage media. Too often the problem is disk access. To diagnose problems of this type has a tool called iotop , which aggregates information dearly already available on a Linux system ( will , iostat, vmstat ) but all in a context of real-time easy to read:
The other major bottleneck of our hypothetical installation is the ability to transmit information over the network, so the other key tool is definitely iftop . These can give a very clear idea in real time about all network resources in a web resource that may be critical and that always requires careful monitoring:
powertop instead makes a different but no less important job, or help us consume less energy, in fact, these reports all the situations that push the system to work to no avail.
Latencytop has just arrived, and has the important goal to give an overview of the process to process latency of the system:
conclude with a couple of tools that help instead from a practical point of view:
Apachetop , can give a real-time console to monitor the use of the Web-server Apache:
while mtop can lend a hand in tuning of mysql server:
The combined use of these
software, can help solve many problems of configuration before having to hack your wallet, that is certainly capable of solving all problems, but it's certainly more fun to squeeze the most of what you have available.
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