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CPU Load explained knowledgebase

How to understand CPU load

CPU load is one of the most important resources to monitor in a server. It shows how the processor is handling the load of work of the server. If the load of the serer is high or saturated then our server is going to perform slower affecting our web application performance and stability. In Linux server we can get the load of the server using the uptime or top command from the command line interface. load average: 0.09, 0.05, 0.01 The three numbers show the load averages for the last minute, 5 minutes and 15 minutes. A load average of 1.00 reflects the full workload of a single processor core of the CPU. In a four core processor it means that one core or 25% of the available processing is in use. A load avarage of 4.00 in a four core processor means that we are using 100% of the cpu processing capacity meaning that our system performance is going be affected. Any higher value will make the server stability to decline. Solutions to CPU load problems could be found in application tuning, load balancing applications or getting a more powerfull server that can handle the load.

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