Hi,
> I've been a MS Windows based programmer for a very long time and was
> recently tossed in an environment where I am developing embedded apps on
> the m68k / Linux platform. That makes me a Linux newbie. I started
> asking a few questions on various IRC channels and was directed to this
> group. So, I will start asking:
>
> These are questions derived from observations on the MCF 5475 CPU
> running Linux 2.6.10 built for the m68k platform. Disk swapping is
> disabled.
>
> 1) When physical memory runs low, the memory manager will try to use
> memory currently allocated to the pagecache. Is this true?
>
> 2) When vm.overcommit_memory = 2 (overcommit disabled), and memory runs
> low, it appears that the memory manager does not try to use memory
> currently allocated to pagecache. Is this true?
>
> 3) Is it possible to disable the pagecache?
Have you read the "Understanding the Linux Virtual Memory Manager" book by Mel
Gorman ? It describes the virtual memory manager in details. I was impressed
by the amount of technical information Mel Gorman gathered and explained
clearly in a single book. Given the ever-changing nature of the Linux kernel,
such detailed documentation about core subsystem is often hard to find.
You can get the book at
http://www.phptr.com/bookstore/product.asp?isbn=0131453483&rl=1#
Laurent Pinchart
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