MANAGING PERFORMANCE

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MANAGING PERFORMANCE

• Chapter 16

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OVERVIEW

• Optimize memory, disk, and CPU performance
• Monitor system performance
• Improve application performance
• Manage scheduled tasks
• Optimize performance for mobile users

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DESIGNING FOR PERFORMANCE

• Factors contributing to poor performance
• Memory
• Disk and network speed
• Processor speed
• Determining resource requirements

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MEMORY

• Used by the system and applications
• Shortage results in use of virtual memory
• Most frequent area for performance improvement

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SLOW DISK AND NETWORK ACCESS

• Might be masking shortage of memory
• Disk fragmentation
• Slow network

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CPU PERFORMANCE

• CPU-intensive applications need faster CPUs
• Other applications idle CPU much of the time
• Lowest odds for performance boost

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DETERMINING RESOURCE REQUIREMENTS
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MONITORING PERFORMANCE

• Performance console
• System Monitor
• Performance Logs
• Performance Alerts
• Task Manager

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THE PERFORMANCE CONSOLE
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SYSTEM MONITOR

• Chart, histogram, and report views
• Monitors real-time performance
• Displays Performance Logs

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ADDING COUNTERS TO SYSTEM MONITOR
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CHART PROPERTIES
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SAVING A CHART
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PERFORMANCE LOGS

• Save performance data to a log file
• Can be viewed and reported on in System Monitor
• Used for long-term monitoring

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CREATING PERFORMANCE LOGS
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VIEWING PERFORMANCE LOGS
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PERFORMANCE ALERTS

• Track performance counters
• Notify users about significant counter values
• Can be configured in multiple ways

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CREATING PERFORMANCE ALERTS
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USING TASK MANAGER
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IMPROVING PERFORMANCE

• Improving memory performance
• Improving disk performance
• Managing scheduled tasks
• Improving CPU performance

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IMPROVING PERFORMANCE MEMORY

• Memory Available Bytes
• Memory Pages / sec
• Page File Usage

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IMPROVING PERFORMANCE DISK PERFORMANCE

• Physical Disk Average Disk Queue Length
• Physical Disk Disk Time

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IMPROVING PERFORMANCE SCHEDULED TASKS
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IMPROVING PERFORMANCE CPU

• Upgrade CPU
• Upgrade motherboard
• Add additional CPU
• Hyper-threading CPUs

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MOBILE PROCESSOR PERFORMANCE

• Multiple-speed processors
• Tied to power state/system load
• Might have speed control utility

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SUMMARY

• Low system resources will affect performance.
• Excessive paging due to low memory may affect
  disk performance.
• Use Task Manager for real-time diagnostics and
  monitoring.
• Use Performance console to monitor performance.
• System Monitor is used for real-time monitoring.
• System Monitor can also view performance log
  files.

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SUMMARY (CONTINUED)

• Use Performance Logs to record long-term
  performance statistics.
• Alerts can notify administrators about issues.
• Improving performance requires persistence.