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How to find iowait to process on linux with top command?

I want to find out how much time my process wait for i/o.

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    you have got to use iotop
    – Rui F Ribeiro
    Commented Jan 23, 2018 at 19:29

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If you need to monitor processes in realtime, use iotop instead.

top can show total amount of iowait of all processes in wa parameter:

wa, IO-wait : time waiting for I/O completion

In addition with top you can see load average that show average number of running + waiting threads. This metric can indirectly indicate disk problems

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    Is the WA measured in percentages and updated in real time?
    – fsefs
    Commented Jan 23, 2018 at 19:43
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    @fsefs, yes it is. From man pages: As a default, percentages for these individual categories are displayed.
    – Egor Vasilyev
    Commented Jan 23, 2018 at 20:19

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