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Daniel
Asked: 2011-10-24 22:29:21 +0800 CST

iostat: See current usage rather than average

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I need to log disk statistics (MB/read, MB/write) of block devices. As I understand, iostat shows an average value. This is not exactly what I want when I'm about to monitor a server. Is there a way to show current values rather than the average?

Thanks

linux monitoring iostat device

2 Answers

  1. Best Answer

    Try

    iostat 1

    or for more detailed view

    iostat -x 1

    You should also check out command sar. Actually, in your case sar is probably what you want since you need the actual readings instead of averages. For example, sar -d 1 1 shows you I/O statistics.

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  2. Use the -y option to suppress the first print being averages:

    iostat -y 1 1
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