From: Michal Hocko <mhocko@kernel.org>
To: Oleksandr Natalenko <oleksandr@redhat.com>
Cc: linux-kernel@vger.kernel.org, Kirill Tkhai <ktkhai@virtuozzo.com>,
Vlastimil Babka <vbabka@suse.cz>,
Matthew Wilcox <willy@infradead.org>,
Pavel Tatashin <pasha.tatashin@soleen.com>,
Timofey Titovets <nefelim4ag@gmail.com>,
Aaron Tomlin <atomlin@redhat.com>,
Grzegorz Halat <ghalat@redhat.com>,
linux-mm@kvack.org, linux-api@vger.kernel.org,
Hugh Dickins <hughd@google.com>
Subject: Re: [PATCH RFC v2 0/4] mm/ksm: add option to automerge VMAs
Date: Wed, 15 May 2019 16:24:19 +0200 [thread overview]
Message-ID: <20190515142419.GD16651@dhcp22.suse.cz> (raw)
In-Reply-To: <20190515085158.hyuamrxkxhjhx6go@butterfly.localdomain>
On Wed 15-05-19 10:51:58, Oleksandr Natalenko wrote:
> On Wed, May 15, 2019 at 10:33:21AM +0200, Michal Hocko wrote:
> > > For my current setup with 2 Firefox instances I get 100 to 200 MiB saved
> > > for the second instance depending on the amount of tabs.
> >
> > What does prevent Firefox (an opensource project) to be updated to use
> > the explicit merging?
>
> This was rather an example of a big project. Other big projects may be
> closed source, of course.
Again, specific examples are usually considered a much better
justification than "something might use the feature".
[...]
> > OK, this makes more sense. Please note that there are other people who
> > would like to see certain madvise operations to be done on a remote
> > process - e.g. to allow external memory management (Android would like
> > to control memory aging so something like MADV_DONTNEED without loosing
> > content and more probably) and potentially other madvise operations.
> > Or maybe we need a completely new interface other than madvise.
>
> I didn't know about those intentions. Could you please point me to a
> relevant discussion so that I can check the details?
I am sorry I do not have any specific links to patches under discussion.
We have discussed that topic at LSFMM this year
(https://lwn.net/Articles/787217/) and Google guys should be sending
something soon.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-05-15 14:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-14 13:16 [PATCH RFC v2 0/4] mm/ksm: add option to automerge VMAs Oleksandr Natalenko
2019-05-14 13:16 ` [PATCH RFC v2 1/4] mm/ksm: introduce ksm_enter() helper Oleksandr Natalenko
2019-05-14 13:16 ` [PATCH RFC v2 2/4] mm/ksm: introduce ksm_leave() helper Oleksandr Natalenko
2019-05-14 13:16 ` [PATCH RFC v2 3/4] mm/ksm: introduce force_madvise knob Oleksandr Natalenko
2019-05-14 13:22 ` Aaron Tomlin
2019-05-15 0:48 ` Timofey Titovets
2019-05-14 13:16 ` [PATCH RFC v2 4/4] mm/ksm: add force merging/unmerging documentation Oleksandr Natalenko
2019-05-15 0:53 ` Timofey Titovets
2019-05-15 6:26 ` Oleksandr Natalenko
2019-05-14 14:41 ` [PATCH RFC v2 0/4] mm/ksm: add option to automerge VMAs Michal Hocko
2019-05-14 14:51 ` Michal Hocko
2019-05-15 6:25 ` Oleksandr Natalenko
2019-05-15 6:53 ` Michal Hocko
2019-05-15 7:37 ` Oleksandr Natalenko
2019-05-15 8:33 ` Michal Hocko
2019-05-15 8:51 ` Oleksandr Natalenko
2019-05-15 14:24 ` Michal Hocko [this message]
2019-05-15 14:51 ` Michal Hocko
2019-05-15 15:15 ` Greg KH
2019-05-16 7:47 ` Michal Hocko
2019-05-16 7:53 ` Greg KH
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