Re: Shared memory IPC using NIO memory-mapped files -- anyone done this?

On Saturday 18 August 2007 08:19, Bob Lee wrote:
> Memory mapped files are not the way to got about this. Having to
> write everything to disk would kind of kill your "high performance"
> requirement. :)

In any decent operating system, memory-mapped file pages are kept in
core as much as other concurrent file access and RAM demand allows.
Assuming one's (system-wide) working set does not exceed physical RAM,
paging of memory-mapped file contents is probably not much of a
problem.

What's more, since the kernel manages memory globally, it can optimize
with more comprehensive information than any single process (easily)
could.


> ...
>
> Bob


Randall Schulz

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