From: Michal Hocko <mhocko@kernel.org>
To: Christoph Lameter <cl@linux.com>
Cc: Matthew Wilcox <willy@infradead.org>,
linux-mm@kvack.org, Pekka Enberg <penberg@cs.helsinki.fi>,
akpm@linux-foundation.org, Mel Gorman <mel@skynet.ie>,
andi@firstfloor.org, Rik van Riel <riel@redhat.com>
Subject: Re: [RFC 0/6] Slab Fragmentation Reduction V16
Date: Mon, 13 Mar 2017 10:16:36 +0100 [thread overview]
Message-ID: <20170313091635.GE31518@dhcp22.suse.cz> (raw)
In-Reply-To: <20170313091515.GD31518@dhcp22.suse.cz>
On Mon 13-03-17 10:15:15, Michal Hocko wrote:
> On Wed 08-03-17 09:58:58, Cristopher Lameter wrote:
> > On Wed, 8 Mar 2017, Michal Hocko wrote:
> >
> > > JFTR the previous version was posted here: https://lwn.net/Articles/371892/
> > > and Dave had some concerns https://lkml.org/lkml/2010/2/8/329 which led
> > > to a different approach and design of the slab shrinking
> > > https://lkml.org/lkml/2010/2/8/329.
> > >
> > > I haven't looked at this series yet but has those concerns been
> > > addressed/considered?
> >
> > Well yes this has been discussed for a couple of years. The basic approach
> > is not only needed for the file systems (like what Chinner was focusing
> > on) but in general for slab caches. The objection was regarding the
> > integration into the slab reclaim logic in vmscan.c and the filesystem
> > reclaim in general.
> >
> > Dave and Matthew were at linux.conf.au and we agreed to first try it with
> > the radix tree and then generalize from there. The reclaim logic
> > was a bit hacky and we will have to find some better way to
> > integrate this.
> >
> > There is a video on youtube capturing the discussion (My talk on movable
> > kernel objects).
>
> Hmm, OK. There seems to be a slot to discuss this at LSFMM this year so
> I hope we can discuss your proposal there.
Btw. it would be great if you could summarize the discussion you had at
LCA here as well.
--
Michal Hocko
SUSE Labs
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prev parent reply other threads:[~2017-03-13 9:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-07 21:24 Christoph Lameter
2017-03-07 21:24 ` [RFC 1/6] slub: Replace ctor field with ops field in /sys/slab/* Christoph Lameter
2017-03-07 21:24 ` [RFC 2/6] slub: Add defrag_ratio field and sysfs support Christoph Lameter
2017-03-07 21:24 ` [RFC 3/6] slub: Add get() and kick() methods Christoph Lameter
2017-03-07 21:24 ` [RFC 4/6] slub: Sort slab cache list and establish maximum objects for defrag slabs Christoph Lameter
2017-03-07 21:24 ` [RFC 5/6] slub: Slab defrag core Christoph Lameter
2017-03-07 22:03 ` Matthew Wilcox
2017-03-07 21:24 ` [RFC 6/6] slub: Extend slabinfo to support -D and -F options Christoph Lameter
2017-03-08 14:34 ` [RFC 0/6] Slab Fragmentation Reduction V16 Michal Hocko
2017-03-08 15:58 ` Christoph Lameter
2017-03-13 9:15 ` Michal Hocko
2017-03-13 9:16 ` Michal Hocko [this message]
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