What is I/O wait?
To understand I/O wait, one must first understand about
process states. At any given moment, a process is in one of several states. This state is indicated by the
STAT column in
top. From the ps(1) man page:
D- Uninterruptible sleep (usually IO)
R- Running or runnable (on ru...
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.