December 2006
Intermediate to advanced
446 pages
11h 28m
English
book
High Available Architectures and Capacity Planning with WebSphere Remote Server V6
by Byron Braswell, Marc Siegel, Le Gang Wu
Content preview from High Available Architectures and Capacity Planning with WebSphere Remote Server V6
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Chapter 8. Operating system performance tuning 191
System
– in: The number of interrupts per second, including the clock
– cs: The number of context switches per second
CPU: These are percentages of total CPU time.
– us: Time spent running non-kernel code (user time, including nice time)
– sy: Time spent running kernel code (system time)
– id: Time spent idle (prior to Linux 2.5.41, included IO-wait time)
– wa: Time spent waiting for IO (prior to Linux 2.5.41, appeared as zero)
8.2.6 The sar command
The sar command is part of the Sysstat set of utilities. It is available from the
following Web site:
http://perso.wanadoo.fr/sebastien.godard/
The
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