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200.1 - Measure and Troubleshoot Resource Usage

Weight: 6

Description: Candidates should be able to measure hardware resource and network bandwidth, identify and troubleshoot resource problems.

Key Knowledge Areas:

  • Measure CPU usage
  • Measure memory usage
  • Measure disk I/O
  • Measure network I/O
  • Measure firewalling and routing throughput
  • Map client bandwidth usage
  • Match / correlate system symptoms with likely problems
  • Estimate throughput and identify bottlenecks in a system including networking

The following is a partial list of the used files, terms and utilities:

  • iostat
  • netstat
  • w
  • top
  • sar
  • processes blocked on I/O
  • blocks out
  • vmstat
  • pstree, ps
  • Isof
  • uptime
  • swap
  • blocks in

Piste : • 205.2 - Advanced Network Configuration and Troubleshooting • 200.2 - Predict Future Resource Needs • 203.1 - Operating the Linux filesystem • 204.1 - Configuring RAID • 203.3 - Creating and configuring filesystem options • 206.1 - Make and install programs from source • 206.2 - Backup operations • 202.3 - Alternate Bootloaders • 201.2 - Compiling a kernel • 200.1 - Measure and Troubleshoot Resource Usage

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