Originally posted by: sckhatri

Hi,

How to calculate the computational memory of the AIX system?

Regards

Sunil
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Originally posted by: KapilrajKoroth

topas look at the right hand side corner
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Originally posted by: sckhatri

Hi,

I want to know that how can I calculate the computational memory instead of using topas so that values can be used in scripts to generate events.

Regards

Sunil
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Originally posted by: Ashok_AIX_Admin

From "vmstat -v' output note down the following values:
1. Memory pages (A)
2. Free pages (B)
3. numperm percentage (C)

Then you can calculate % computational memory using the below formula:

((A - B) - ((C * A)/100))/ A )

Basically you are calculating number of memory pages used and subtracting the non-computational pages.

Ashok Velayudham
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Originally posted by: MatthewBourne

Does this differentiate between application and kernel?
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Originally posted by: Ashok_AIX_Admin

No it doesn't.

Ashok
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Originally posted by: sckhatri

Hi Ashok,

Thanks for the clarification.

Regards

Sunil
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Originally posted by: SystemAdmin

Hi Sunil,

You can calculate the computational memory by below command in Aix6.1 onwards
vmstat -v | grep "percentage of memory used for computational pages" | awk '{ print $1 }'
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