From: Michal Hocko <mhocko@kernel.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Minchan Kim <minchan@kernel.org>, Roman Gushchin <guro@fb.com>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@fb.com, lsf-pc@lists.linux-foundation.org
Subject: Re: [PATCH 3/3] dcache: account external names as indirectly reclaimable memory
Date: Tue, 17 Apr 2018 08:44:14 +0200 [thread overview]
Message-ID: <20180417064414.GX17484@dhcp22.suse.cz> (raw)
In-Reply-To: <a6413098-b37c-a6b8-45cb-ce273ff16c29@suse.cz>
[the head of the thread is http://lkml.kernel.org/r/08524819-14ef-81d0-fa90-d7af13c6b9d5@suse.cz]
On Mon 16-04-18 21:57:50, Vlastimil Babka wrote:
> On 04/16/2018 02:27 PM, Michal Hocko wrote:
> > On Mon 16-04-18 14:06:21, Vlastimil Babka wrote:
> >>
> >> For example the percpu (and other) array caches...
> >>
> >>> maybe it will turn out that such a large
> >>> portion of the chache would need to duplicate the state that a
> >>> completely new cache would be more reasonable.
> >>
> >> I'm afraid that's the case, yes.
> >>
> >>> Is this worth exploring
> >>> at least? I mean something like this should help with the fragmentation
> >>> already AFAIU. Accounting would be just free on top.
> >>
> >> Yep. It could be also CONFIG_urable so smaller systems don't need to
> >> deal with the memory overhead of this.
> >>
> >> So do we put it on LSF/MM agenda?
> >
> > If you volunteer to lead the discussion, then I do not have any
> > objections.
>
> Sure, let's add the topic of SLAB_MINIMIZE_WASTE [1] as well.
>
> Something like "Supporting reclaimable kmalloc caches and large
> non-buddy-sized objects in slab allocators" ?
>
> [1] https://marc.info/?l=linux-mm&m=152156671614796&w=2
OK, noted.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2018-04-17 6:44 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-05 13:37 [PATCH 0/3] indirectly reclaimable memory Roman Gushchin
2018-03-05 13:37 ` [PATCH 1/3] mm: introduce NR_INDIRECTLY_RECLAIMABLE_BYTES Roman Gushchin
2018-04-11 13:16 ` Vlastimil Babka
2018-04-11 13:56 ` Roman Gushchin
2018-04-12 6:52 ` Vlastimil Babka
2018-04-12 11:52 ` Michal Hocko
2018-04-12 14:38 ` Roman Gushchin
2018-04-12 14:46 ` Michal Hocko
2018-04-12 14:57 ` Roman Gushchin
2018-04-13 6:59 ` Michal Hocko
2018-04-13 12:13 ` vinayak menon
2018-04-25 3:49 ` Vijayanand Jitta
2018-04-25 12:52 ` Roman Gushchin
2018-04-25 15:47 ` Vlastimil Babka
2018-04-25 16:48 ` Roman Gushchin
2018-04-25 17:02 ` Vlastimil Babka
2018-04-25 17:23 ` Roman Gushchin
2018-04-25 15:55 ` Matthew Wilcox
2018-04-25 16:59 ` Vlastimil Babka
2018-03-05 13:37 ` [PATCH 2/3] mm: add indirectly reclaimable memory to MemAvailable Roman Gushchin
2018-03-05 13:47 ` Roman Gushchin
2018-03-05 13:37 ` [PATCH 2/3] mm: treat indirectly reclaimable memory as available in MemAvailable Roman Gushchin
2018-03-05 13:37 ` [PATCH 3/3] dcache: account external names as indirectly reclaimable memory Roman Gushchin
2018-03-12 21:17 ` Al Viro
2018-03-12 22:36 ` Roman Gushchin
2018-03-13 0:45 ` Al Viro
2018-04-05 22:11 ` Andrew Morton
2018-04-06 10:32 ` Roman Gushchin
2018-04-13 13:35 ` Minchan Kim
2018-04-13 13:59 ` Michal Hocko
2018-04-13 14:20 ` Vlastimil Babka
2018-04-13 14:28 ` Michal Hocko
2018-04-13 14:37 ` Johannes Weiner
2018-04-16 11:41 ` Michal Hocko
2018-04-16 12:06 ` Vlastimil Babka
2018-04-16 12:27 ` Michal Hocko
2018-04-16 19:57 ` Vlastimil Babka
2018-04-17 6:44 ` Michal Hocko [this message]
2018-04-16 13:09 ` Matthew Wilcox
2018-04-17 11:24 ` Roman Gushchin
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