I'm running a Linux Server with "Oracle Linux Server release 6.5" which is pretty much the same as RedHat Version.

I need to determine the latency on my disk devices.

The man page of the iostat command states :

    The  average  service  time (in milliseconds) for I/O requests that were 
    issued to the device. Warning! Do not trust this field any more. This field
    will be removed in a future sysstat version.

What is recommended to be used instead on this version? The Kernel version is: 3.8.13-16.2.1.el6uek.x86_64

I understand that the counters in this Kernel version are not reliable so the developers seemed to not trust the numbers any more. But what can be used instead of the iostat? ( /proc/diskstats? )

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