Re: Develop with a Power/i Book
Re: Develop with a Power/i Book
- Subject: Re: Develop with a Power/i Book
- From: Jeff Harrell <email@hidden>
- Date: Sun, 22 Jun 2003 11:53:36 -0500
On Sunday, June 22, 2003, at 11:42 AM, Joshua Scott Emmons wrote:
top reports 73Mb of physical memory is inactive, and I only have 3Mb
free, so I'm clearly skating the line as far as swapping goes, but you
can get a heck of a lot more done and 256Mb then I thought.
Actually, memory that's marked inactive is essentially unused. The way
it works is that a program loads a page into memory, and then exits.
The OS doesn't free up that memory right away; it keeps it around in
case it should be asked for again. It's a cache.
When free memory (memory that has not been allocated at all) is
exhausted, the system will start releasing inactive pages. So after a
little while, your computer should have nearly no free memory and some
amount of inactive memory. The sum of free and inactive memory is the
amount of memory that you're not using at the moment. So out of 256 MB,
you're not using 76 MB at all. That's pretty good.
(That's how it works in theory. In practice, I'm not sure how much of
that holds true.)
--
email@hidden
http://homepage.mac.com/jharrell
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