Messages in this thread | | | Date | Thu, 27 Jun 2013 17:58:53 -0700 | From | Anton Vorontsov <> | Subject | Re: [PATCH v2] vmpressure: implement strict mode |
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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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