Well, the server is not REALLY memory bound according to the output of the top command below. My application just does so much I/O that 8gb of the 24gb are allocated to I/O Buffers by the OS. Are there parameters to limit the amount of memory used for I/O Buffers?
The "lm" processes are database lock managers. The "hciengine" processes are the interface engines running which process transactions and route/tranform/send them to their destinations. The interface engines write a copy of the transaction to a Raima database about 15 times during the process of getting them where they are going, thus the large amount of write activity large amount memory used for I/O Buffers.
Here is the output from the commands suggested. I'm not familiar with most of these statistics/settings, so hopefully someone will be nice enough to explain. :-)
To me it looks like the I/Os Blocked with no PBuf is not too high. This server has been running since May 16th. The one thing I'm not too sure about is the min/max tunables pin, perm and client. I think we left these at the default settings when AIX was installed.
The disk activity is not all that high MOST of the time. We do have some archiving that happens 4 times a day, however, even then I don't see much IO Wait going on. It does seem like Disk0 and Disk1 are the busiest. This server is attached to a SAN, so there are many virtual hdisks.
Again, I'm do not know how to read the output of this command, but here it is in case anyone can help.
Thanks for the help and suggestions!
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