On 11/12/2013 05:30 AM, Bob Liu wrote:
Hi Johannes, On Fri, Oct 11, 2013 at 5:46 AM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote:Future Right now we have a fixed ratio (50:50) between inactive and active list but we already have complaints about working sets exceeding half of memory being pushed out of the cache by simple used-once streaming in the background. Ultimately, we want to adjust this ratio and allow for a much smaller inactive list. These patches are an essential step in this direction because they decouple the VMs ability to detect working set changes from the inactive list size. This would allow us to base the inactive list size on something more sensible, like the combined readahead window size for example.I found that this patchset have the similar purpose as Zcache(http://lwn.net/Articles/562254/) in some way.
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