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aio question

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Marksmen

Marksmen

Technical User
Feb 4, 2003
36
US
How can I tell how many disks will be accessed simulatneously by AIO? We are running AIX 5.1 and Oracle 9i.
 
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One command that may help you is

pstat -a | grep aio

to find out how many aio procs started- or

ps aux to find number and usage-
 
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Well, for AIX 4.3.3 and Oracle 8, I believe Oracle's recommendations for AIO servers were a minimum of 5 per hdisk and a maximum of 10 per hdisk.

That's hdisks that contain Oracle data, of course, and applies to hdisks, not pdisks in case you're using some sort of raid array (do a count of lsvg -p on your data volume group)
 
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