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On Mon, May 28, 2007 at 12:33:57AM -0500, Sumantra Kundu wrote:
> Hi,
>        Currently I am tweaking the performance of the page daemon by
> modifying the decision thresholds based on which the daemon moves
> pages from active  to inactive list.

I'm confused. I thought the active list contained pages that were in use,=
=20
and the inactive ones that weren't. Thus how does anything other than the=
=20
actual user of pages make this change?

> Questions: What is the most appropriate way (measurement parameters)
> to understand the change in performance of the page daemon?

To be honest, this depends.

It depends on what you are doing.

I think a good thing to try is pick a class of workload, such as=20
mostly-sequential access. Then pick a test tool that generates this load.=
=20
Then monitor its performance metrics as you adjust things.

Take care,

Bill

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