Re: [ckrm-tech] RFC: Memory Controller

[Andrew Morton]

On Tue, 31 Oct 2006 14:49:12 +0530
Balbir Singh <balbir@xxxxxxxxxx> wrote:

> The idea behind limiting the page cache is this
> 
> 1. Lets say one container fills up the page cache.
> 2. The other containers will not be able to allocate memory (even
> though they are within their limits) without the overhead of having
> to flush the page cache and freeing up occupied cache. The kernel
> will have to pageout() the dirty pages in the page cache.

There's a vast difference between clean pagecache and dirty pagecache in this
context.  It is terribly imprecise to use the term "pagecache".  And it would be
a poor implementation which failed to distinguish between clean pagecache and
dirty pagecache.

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