What Is Io Time?
Contents I/O Wait (Iowait) Is the Percentage of Time That the Cpu (Or Cpus) Were Idle During Which the System Had Pending Disk I/O Requests. What Does Iowait...
I/O wait (iowait) is the percentage of time that the CPU (or CPUs) were idle during which the system had pending disk I/O requests.
What does Iowait mean?
IOWait (usually labeled %wa in top) is a sub-category of idle (%idle is usually expressed as all idle except defined subcategories), meaning the CPU is not doing anything.
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What is I O wait in Linux?
iowait is simply a form of idle time when nothing could be scheduled. The value may or may not be useful in indicating a performance problem, but it does tell the user that the system is idle and could have taken more work.
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