paging space amount calculation

[Nicholas Dronen]

martijn <martijn005@hotmail.com> wrote:
m> Hi,

m> We're running AIX 4.3.3 and will have a total of 8GB of RAM installed.

m> According to an AIX manual, this seems to be the way to calculate the amount
m> of paging space necessary:
m> Page Space = 512 + ( RAM - 256 ) * 1.25

m> So with 8GB of RAM:
m> Page Space = 512 + (8192 -256) * 1,25 = 10,5 GB

m> I'm thinking about just going with the 10,5GB of paging space.

m> But maybe somebody else has some other ideas about this?

I don't think any formula for the "right" amount of paging space
is terribly useful. If the machine has 8GB RAM, it's probably
doing something important, which means it should have been spec'ed
to avoid paging altogether.

The comp.unix.aix FAQ is a large and mostly useful document. Did
you read this section before posting?

[url]http://www.faqs.org/faqs/aix-faq/part2/section-14.html[/url]

2. How much paging space do I need?

Regards,

Nicholas

--
"Why shouldn't I top-post?" [url]http://www.aglami.com/tpfaq.html[/url]
"Meanings are another story." [url]http://www.ifas.org/wa/glossolalia.html[/url]

[martijn]

Hi,

We're running AIX 4.3.3 and will have a total of 8GB of RAM installed.

According to an AIX manual, this seems to be the way to calculate the amount
of paging space necessary:
Page Space = 512 + ( RAM - 256 ) * 1.25

So with 8GB of RAM:
Page Space = 512 + (8192 -256) * 1,25 = 10,5 GB

I'm thinking about just going with the 10,5GB of paging space.

But maybe somebody else has some other ideas about this?

Thanks for you input.
martijn