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