Re: Possible Idea with filesystem buffering.

Stuart Young
2002-01-23T01:14:53Z

At 05:10 PM 22/01/02 -0500, Richard B. Johnson wrote:
>We need a free-RAM target, possibly based upon a percentage of
>available RAM. The lack of such a target is what causes the
>out-of-RAM condition we have been experiencing. Somebody thought
>that "free RAM is wasted RAM" and the VM has been based upon
>that theory. That theory has been proven incorrect. You need
>free RAM, just like you need "excess horsepower" to make
>automobiles drivable. That free RAM is the needed "rubber-band"
>to absorb the dynamics of real-world systems.

It'd be nice if this cache high/low watermark was adjustable, preferably
through say the sysctl interface, on a running kernel. This would mean that
a competent system administrator could tune the system to their needs. A
decent runscript for a particular program (I'm assuming run as root here)
could adjust the value to absorb the dynamics of a particular program.

Stuart Young - sgy@amc.com.au
(aka Cefiar) - cefiar1@optushome.com.au

[All opinions expressed in the above message are my]
[own and not necessarily the views of my employer..]