linux-kernel - Re: [PATCH v2 0/6] mm: zswap: global shrinker fix and proactive shrink

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Message-ID: <CAKEwX=MPTLP5svbV+ixrqtq8k-E1XTfLdkUy44vm21MdJogNOw@mail.gmail.com>
Date: Wed, 17 Jul 2024 12:01:15 -0700
From: Nhat Pham <nphamcs@...il.com>
To: Yosry Ahmed <yosryahmed@...gle.com>
Cc: Takero Funaki <flintglass@...il.com>, Johannes Weiner <hannes@...xchg.org>, 
	Chengming Zhou <chengming.zhou@...ux.dev>, Jonathan Corbet <corbet@....net>, 
	Andrew Morton <akpm@...ux-foundation.org>, 
	Domenico Cerasuolo <cerasuolodomenico@...il.com>, linux-mm@...ck.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] mm: zswap: global shrinker fix and proactive shrink

On Wed, Jul 17, 2024 at 11:05 AM Yosry Ahmed <yosryahmed@...gle.com> wrote:
>
> I have always thought that the shrinker should play this role in one
> way or another. Instead of an arbitrary watermark and asynchronous
> work, it incrementally pushes the zswap LRU toward disk as reclaim
> activity increases.
>
> Is the point behind proactive shrinking is to reduce the latency in
> the reclaim path?

Yeah, reducing latency is the one benefit I have in mind :) I don't
feel too strongly regarding this though - in fact I'm more biased
towards the other shrinker in the first place.