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Load Average – indicator for CPU demand only?
‘Load Average‘ is an age-old metric reported in various operating systems. It’s often assumed as a metric to indicate the CPU demand only. However, it is not the case. ‘Load Average’ not only indicates CPU demand, but also the I/O demand (i.e., network read/write, file read/write, disk read/write). To prove this theory, we conducted this simple case study.
Continue reading “Load Average – indicator for CPU demand only?”nice, renice, top
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I/O waiting CPU time – ‘wa’ in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘waiting CPU time’.
Continue reading “I/O waiting CPU time – ‘wa’ in top”User CPU time – ‘us’ time in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘User CPU time’.
Continue reading “User CPU time – ‘us’ time in top”System CPU time – ‘sys’ time in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘System CPU time’.
Continue reading “System CPU time – ‘sys’ time in top”Steal CPU time – ‘st’ time in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘Steal (or Stolen) CPU time’.
Continue reading “Steal CPU time – ‘st’ time in top”Software Interrupt time – ‘si’ time in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘Software Interrupt CPU time’.
Continue reading “Software Interrupt time – ‘si’ time in top”nice CPU time – ‘ni’ time in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘nice CPU time’.
Continue reading “nice CPU time – ‘ni’ time in top”Idle CPU time – ‘id’ time in top
CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, Stolen CPU time. In this article let us study about ‘Idle CPU time’.
Continue reading “Idle CPU time – ‘id’ time in top”
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