Messages in this thread | | | Date | Mon, 25 Nov 2013 16:57:29 -0800 | From | Andrew Morton <> | Subject | Re: [patch 0/9] mm: thrash detection-based file cache sizing v6 |
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On Sun, 24 Nov 2013 18:38:19 -0500 Johannes Weiner <hannes@cmpxchg.org> wrote:
> This series solves the problem by maintaining a history of pages > evicted from the inactive list, enabling the VM to detect frequently > used pages regardless of inactive list size and facilitate working set > transitions.
It's a very readable patchset - thanks for taking the time to do that.
> 31 files changed, 1253 insertions(+), 401 deletions(-)
It's also a *ton* of stuff. More code complexity, larger kernel data structures. All to address a quite narrow class of workloads on a relatively small window of machine sizes. How on earth do we decide whether it's worth doing?
Also, what's the memcg angle? This is presently a global thing - do you think we're likely to want to make it per-memcg in the future?
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