What is not measured cannot be improved. CPU usage is one of the most important performance metrics in server monitoring. It's the primary value to analyze to determine the processing speed of applications, which is a key performance indicator of network and server health. If CPU usage spikes up, the user interface of that server will eventually slow down, and multiple process will crash along with the application running on that server, creating an avalanche effect. High CPU usage can also cause high memory utilization issues that can cause a server to go down for which CPU usage monitoring is important. Apart from this, monitoring based on hardware metrics such as CPU temperature monitoring will be an added advantage, as it gives more insights into the CPU's performance.

ManageEngine OpManager: The ideal CPU usage monitoring tool

ManageEngine OpManager monitors servers, virtual machines (VMs), routers, switches, firewall, ports, wireless LAN controllers (WLCs), storage, and network devices via Windows Management Instrumentation (WMI), Simple Network Management Protocol (SNMP), and command line interface (CLI) protocols periodically. OpManager is a CPU usage monitoring software that enables CPU performance monitoring, CPU health check, CPU resource availability monitoring, CPU speed checks, and more. OpManager is both a Linux and Windows CPU usage monitor console.

CPU usage monitoring: Advanced network diagnosis

CPU usage monitor- ManageEngine OpManager

In an enterprise network, a typical office desktop might consume only 30 percent of the CPU usage. However, depending on the application's requirement , about 70 to 100 percent of the CPU is supposed to run CPU-exhausting activities on an average. Even then, most servers will run to 90 percent to 98 percent on average, where the CPU is considered to be fully used. If this happens occasionally, say for an adhoc application run or a team video conference call, it is understandable. However, when the CPU utilization spikes over 80 percent too often, the CPU tends to process the requests at a lower speed than desirable and drops requests, leading to a sluggish CPU performance. For network devices if the CPU utilization is high, packet drop is inevitable. This is where CPU load monitoring comes into play.

For large and enterprise networks, it is almost impossible to know which server would have high CPU utilization issues, and would require manual actions by technicians or IT admins. But these problems can directly hamper business continuity for an uncertain amount of time, which could potentially cost an organization millions of dollars. In a virtual environment, it's not easy to ascertain which device is using high CPU resource without the user informing the IT admin. If the CPU spike goes unnoticed, then the server can go down for no apparent reason, causing a disruption in operations. This is why every IT needs a CPU load monitor. With a CPU usage monitoring tool like OpManager in place, it's not necessary for the user to keep an eye on CPU usage. OpManager accomplishes this by tracking CPU usage and potential CPU bottlenecks, enabling IT admins to improve network performance.

CPU usage monitoring: Threshold-based alerting

CPU utilization monitor- ManageEngine OpManager

OpManager's CPU usage monitor enables IT admins to set thresholds for each CPU monitor so they can be informed of the CPU usage limit when the processor time reaches the limit, or when the utilization of the disk exceeds the specified limit. The thresholds can be set according to the number of breaches or severity levels such as attention/ trouble/critical. These alerts can be sent via various notification profiles such as SMS, email, Slack, etc.

CPU usage and CPU utilization monitor: Trend reports in OpManager

CPU utilization monitor- ManageEngine OpManager

OpManager provides over 100 built-in reports. Using the reports feature,, a report can be manually generated or scheduled to be auto-generated in a designated time, based on any parameter for measuring CPU usage.

OpManager's reports can be organized to show interfaces or devices with the highest CPU utilization, CPU efficiency, and interface errors for a particular time frame. It is possible to drill down into these metrics to learn more from the reports. Reports can be saved as PDF, HTML or sent via email.

CPU usage monitoring: Key metrics

Metrics Description monitored
CPU utilization Monitors the CPU utilization of the network device
CPU socket Monitors the physical socket number of the CPU chip
CPU speed Monitors the internal speed in megahertz of this processor
Idle Time Monitors the percentage of time during the sample interval that the processor was idle
Privileged Time Percentage of non-idle processor time spent in privileged mode
Processor Time Monitors the CPU usage of a selected, individual process
User Time Percentage of non-idle processor time spent in user mode
Processor Queue Displays the number of process threads (program execution units) waiting to be run on all processors
Drive Size Monitors the physical drive size in megabytes (MBs)
PSU Redundancy Monitors the redundancy state of the power supply
Page faults Overall rate at which faulted pages are handled by the processor
CPU process count Monitors the number of processes running

Monitoring CPU usage is one among the many functionalities OpManger has up its sleeves when it comes to CPU monitoring. OpManager's comprehensive CPU monitoring funtionalities encompass tracking CPU performance, monitoring CPU hardware metrics, holistic dashboards dedicated to CPU monitoring and much more.

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Customer reviews

OpManager - 10 Steps Ahead Of The Competition, One Step Away From Being Unequalled.
- Network Services Manager, Government Organization
Review Role: Infrastructure and OperationsCompany Size: Gov't/PS/ED 5,000 - 50,000 Employees
"I have a long-standing relationship with ManageEngine. OpManager has always missed one or two features that would make it truly the best tool on the market, but over it is the most comprehensive and easy to use the product on the market."
Easy Implementation, Excellent Support & Lower Cost Tool
- Team Lead, IT Service Industry
Review Role: Infrastructure and OperationsCompany Size: 500M - 1B USD
"We have been using OpManager since 2011 and our overall experience has been excellent. The tool plays a vital role in providing the value to our organisation and to the customers we are supporting. The support is excellent and staff takes full responsibilities in resolving the issues. Innovation is never stopping and clearly visible with newer versions"
Easy Implementation With A Feature Rich Catalogue, Support Has Some Room For Improvement
- NOC Manager in IT Service Industry
Review Role: Program and Portfolio ManagementCompany Size: 500M - 1B USD
"The vendor has been supporting during the implementation & POC phases providing trial licenses. Feature requests and feedback is usually acted upon swiftly. There was sufficient vendor support during the implementation phase. After deployment, the support is more than adequate, where the vendor could make some improvements."
Great Monitoring Tool
- CIO in Finance Industry
Review Role: CIOCompany Size: 1B - 3B USD
"Manage Engine provides a suite of tools that have made improvements to the availability of our internal applications. From monitoring, management and alerting, we have been able to peak performance within our data center."
Simple Implementation, Easy To Use. Very Intuitive.
- Principal Engineer in IT Services
Review Role: Enterprise Architecture and Technology InnovationCompany Size: 250M - 500M USD
"Manage Engine support was helpful and responsive to all our queries"

Case Studies - OpManager


Hinduja Global Solutions saves $3 million a year using OpManager

Industry: IT

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