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SubjectRe: [PATCH v2] vmpressure: implement strict mode
On Thu, Jun 27, 2013 at 05:34:33PM -0700, Andrew Morton wrote:
> > If so, userland daemon would receive lots of events which are no interest.
>
> "lots"? If vmpressure is generating events at such a high frequency that
> this matters then it's already busted?

Current frequency is 1/(2MB). Suppose we ended up scanning the whole
memory on a 2GB host, this will give us 1024 hits. Doesn't feel too much*
to me... But for what it worth, I am against adding read() to the
interface -- just because we can avoid the unnecessary switch into the
kernel.

* For bigger hosts we should increase the window, as we do for the vmstat.


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