configure for innodb variables (no replies)

Hi,

I want to configure those innodb variables in mysql server.
What is the proper values of these variables?
How can I configure it?
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innodb-io-capacity
innodb-io-capacity-max
innodb-lru-scan-depth
innodb-write-io-threads
innodb-read-io-threads
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Is there any formular for configureing in my.cnf?
How can I decide to profer value?

Please Help me.