Questions and Answers
Which of the following resources are available for monitoring in a system? (Select all that apply)
Monitoring system performance is only done when the system is running smoothly.
False
What are the three steps involved in performance monitoring?
- Monitor resource shortages, 2. Analyze data and resolve problem, 3. Monitor to ensure resolution.
What is the maximum data transfer rate that bandwidth describes?
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What does CPU utilization reaching 100% signify?
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A gigabit Ethernet connection has a bandwidth of ______ Mbps.
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Name one factor that complicates monitoring disk drive performance.
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Study Notes
Resource Monitoring
- Resource monitoring is a system application for real-time observation of hardware (CPU, memory, disk, network) and software usage.
- Essential resources available for monitoring include CPU power, bandwidth, memory, and storage.
System Performance Monitoring
- System performance monitoring usually occurs when performance issues arise, such as slow system response or program failures.
- A three-step approach guides performance monitoring:
- Identify resource shortages causing performance problems.
- Analyze monitoring data to determine a resolution strategy.
- Re-monitor to confirm that performance issues have been resolved.
- Monitoring is typically brief but detailed in scope.
Monitoring Considerations
- Monitoring involves more than just observing the four resources; it requires analyzing various performance metrics.
- For instance, evaluating disk drive performance may include:
- Available free space
- Average I/O operations per second
- Average completion time for I/O operations
- Distribution of read vs. write operations
- Average data volume for read/write operations
Monitoring CPU Power
- A CPU consists of numerous interconnected processing units responsible for executing software instructions, performing calculations, making logical decisions, and facilitating communication with other system components.
- Basic CPU monitoring checks whether CPU utilization ever reaches 100%, indicating resource limits.
- Investigating detailed CPU utilization data helps identify primary consumers of processing power during peak usage periods.
Monitoring Bandwidth
- Bandwidth measures the maximum data transfer rate of a network or Internet connection, expressed in units like Mbps (megabits per second).
- Example bandwidths include:
- Gigabit Ethernet connection: 1,000 Mbps (125 MB/s)
- Cable modem connection: 25 Mbps
- Bandwidth indicates the capacity of a connection, not the speed at which data travels, making it a crucial factor in assessing network performance.
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Description
Explore the fundamentals of resource monitoring in systems through this quiz. Learn about critical components such as CPU, memory, disk, and network usage in real-time. This chapter covers how to identify and monitor these essential resources effectively.
