onstat -g iob command: Print big buffer use summary

Use the onstat -g iob command to display a summary of big buffer use.

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Syntax:

>>-onstat-- -g--iob--------------------------------------------><

Example output

Figure 1. onstat -g iob command output
AIO big buffer usage summary:
                 reads                                   writes
       pages    ops  pgs/op  holes  hl-ops hls/op      pages    ops  pgs/op
fifo      0       0   0.00      0       0   0.00           0      0   0.00
 kio      0       0   0.00      0       0   0.00           0      0   0.00
 adt      0       0   0.00      0       0   0.00           0      0   0.00
 msc      0       0   0.00      0       0   0.00           0      0   0.00
 aio      0       0   0.00      0       0   0.00         607    607   1.00
 pio      0       0   0.00      0       0   0.00           0      0   0.00
 lio      0       0   0.00      0       0   0.00           0      0   0.00

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