Topic
• 7 replies
• Latest Post - ‏2012-12-24T12:29:36Z by SystemAdmin
sckhatri
4 Posts

# Pinned topic Computational Memory Calculation

‏2011-02-21T10:57:58Z |
Hi,

How to calculate the computational memory of the AIX system?

Regards

Sunil
Updated on 2012-12-24T12:29:36Z at 2012-12-24T12:29:36Z by SystemAdmin
• KapilrajKoroth
5 Posts

#### Re: Computational Memory Calculation

‏2011-02-21T15:44:25Z
topas look at the right hand side corner
• sckhatri
4 Posts

#### Re: Computational Memory Calculation

‏2011-02-22T09:02:20Z
topas look at the right hand side corner
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
13 Posts

#### Re: Computational Memory Calculation

‏2011-03-01T04:21:36Z
• sckhatri
• ‏2011-02-22T09:02:20Z
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
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
• MatthewBourne
28 Posts

#### Re: Computational Memory Calculation

‏2011-03-01T17:35:50Z
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
Does this differentiate between application and kernel?
13 Posts

#### Re: Computational Memory Calculation

‏2011-03-08T05:26:48Z
Does this differentiate between application and kernel?
No it doesn't.

Ashok
• sckhatri
4 Posts

#### Re: Computational Memory Calculation

‏2011-03-09T10:30:50Z
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
Hi Ashok,

Thanks for the clarification.

Regards

Sunil