From: Barry Song <21cnbao@gmail.com>
To: David Hildenbrand <david@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Barry Song <v-songbaohua@oppo.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Matthew Wilcox <willy@infradead.org>,
Oscar Salvador <osalvador@suse.de>,
Ryan Roberts <ryan.roberts@arm.com>, Zi Yan <ziy@nvidia.com>
Subject: Re: [RFC PATCH] mm: don't promote exclusive file folios of dying processes
Date: Fri, 18 Apr 2025 08:16:08 +0800 [thread overview]
Message-ID: <CAGsJ_4yUCEG-QyVJiCBBr+LEz4wWDpqws+NhXw6pH5C5+kNUmA@mail.gmail.com> (raw)
In-Reply-To: <3b665ef9-d773-476c-826c-8729056c611c@redhat.com>
On Thu, Apr 17, 2025 at 8:57 PM David Hildenbrand <david@redhat.com> wrote:
>
> >> We actually took a more aggressive approach by implementing a hook to demote
> >> exclusive folios of dying apps, which yielded good results—reducing kswapd
> >> overhead, refaults, and thrashing. Of course, it is even much more controversial
> >> than this patch.
> >
> > That doesn't sound wrong to me for Android apps.
> >
> > How about a prctl() to request the behavior for those specific app
> > processes where you have clear usage signal?
>
> I was thinking about the same, so likely that might be a viable solution.
Many thanks to both Johannes and David for the suggestion. I’d be delighted to
take a look at this.
>
> --
> Cheers,
>
> David / dhildenb
>
Thanks
Barry
prev parent reply other threads:[~2025-04-18 0:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-12 8:58 Barry Song
2025-04-12 15:48 ` Matthew Wilcox
2025-04-12 16:31 ` Zi Yan
2025-04-16 7:48 ` Barry Song
2025-04-16 8:24 ` Baolin Wang
2025-04-16 8:32 ` David Hildenbrand
2025-04-16 9:24 ` Barry Song
2025-04-16 9:32 ` David Hildenbrand
2025-04-16 9:38 ` Barry Song
2025-04-16 9:40 ` David Hildenbrand
2025-04-16 14:15 ` Johannes Weiner
2025-04-16 15:59 ` David Hildenbrand
2025-04-16 18:18 ` Johannes Weiner
2025-04-16 21:54 ` Barry Song
2025-04-16 23:58 ` Johannes Weiner
2025-04-17 2:43 ` Barry Song
2025-04-17 12:17 ` Johannes Weiner
2025-04-17 12:57 ` David Hildenbrand
2025-04-18 0:16 ` Barry Song [this message]
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