Take a look at the source for Sys::Statistics::Linux::DiskStats. It includes comments like:

        # ------------------------------------------------------------
+--
        # The sectors are equivalent with blocks and have a size of 51
+2
        # bytes since 2.4 kernels. This value is needed to calculate t
+he
        # amount of disk i/o's in bytes.
        # ------------------------------------------------------------
+--
        blocksize => 512,

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Reading the code and seeing how the module's author calculates values should be helpful.

In reply to Re^3: (OT) Get the number of blocks per second by reading the proc diskstats file by keszler
in thread (OT) Get the number of blocks per second by reading the proc diskstats file by haavard82

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