On Fri, May 17, 2013 at 05:54:18PM +0100, Mel Gorman wrote:
> On Mon, May 13, 2013 at 07:40:02AM -0500, Seth Jennings wrote:
> > zswap is a thin compression backend for frontswap. It receives pages from
> > frontswap and attempts to store them in a compressed memory pool, resulting
> > in
> > an e
On Tue, May 14, 2013 at 09:37:08AM -0700, Dan Magenheimer wrote:
> > Can I get your ack on this pending the other changes?
>
> I'd like to hear Mel's feedback about this, but perhaps
> a compromise to allow for zswap merging would be to add
> something like the following to zswap's Kconfig comment
On Mon, May 13, 2013 at 07:40:02AM -0500, Seth Jennings wrote:
> zswap is a thin compression backend for frontswap. It receives pages from
> frontswap and attempts to store them in a compressed memory pool, resulting in
> an effective partial memory reclaim and dramatically reduced swap device I/O.
On 05/13/2013 08:40 AM, Seth Jennings wrote:
zswap is a thin compression backend for frontswap. It receives pages from
frontswap and attempts to store them in a compressed memory pool, resulting in
an effective partial memory reclaim and dramatically reduced swap device I/O.
Additionally, in mos
On 05/16/2013 12:45 PM, Dan Magenheimer wrote:
From: Rik van Riel [mailto:r...@redhat.com]
I'm not sure we can get it right before people actually start
using it for real world setups, instead of just running benchmarks
on it.
The sooner we get the code out there, where users can play with
it
odman;
> Benjamin Herrenschmidt; Dave
> Hansen; Joe Perches; Joonsoo Kim; Cody P Schafer; Hugh Dickens; Paul
> Mackerras; linux...@kvack.org;
> linux-kernel@vger.kernel.org; de...@driverdev.osuosl.org
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> On 05/14/2013 04:18
On 05/14/2013 04:18 PM, Dan Magenheimer wrote:
It's unfortunate that my proposed topic for LSFMM was pre-empted
by the zsmalloc vs zbud discussion and zswap vs zcache, because
I think the real challenge of zswap (or zcache) and the value to
distros and end users requires us to get this right BEF
On 05/15/2013 05:36 PM, Dan Magenheimer wrote:
If you disagree with any of my arguments earlier in this thread,
please say so. Else, please reinforce that the MM subsystem
needs to dynamically adapt to a broad range of workloads,
which zswap does not (yet) do. Zswap is not simple, it is
simpli
> From: Rik van Riel [mailto:r...@redhat.com]
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> On 05/15/2013 03:35 PM, Dan Magenheimer wrote:
> >> From: Konrad Rzeszutek Wilk
> >> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
> >>
> >>> Sorr
r; Rik van
> Riel; Larry Woodman;
> Benjamin Herrenschmidt; Joe Perches; Joonsoo Kim; Cody P Schafer; Hugh
> Dickens; Paul Mackerras; linux-
> m...@kvack.org; linux-kernel@vger.kernel.org; de...@driverdev.osuosl.org
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> On 05/15/201
ik van Riel; Larry Woodman;
> Benjamin Herrenschmidt; Dave
> Hansen; Joe Perches; Joonsoo Kim; Cody P Schafer; Hugh Dickens; Paul
> Mackerras; linux...@kvack.org;
> linux-kernel@vger.kernel.org; de...@driverdev.osuosl.org
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> O
Seth Jennings wrote:
>On Wed, May 15, 2013 at 02:55:06PM -0400, Konrad Rzeszutek Wilk wrote:
>> > Sorry, but I don't think that's appropriate for a patch in the MM
>subsystem.
>>
>> I am heading to the airport shortly so this email is a bit hastily
>typed.
>>
>> Perhaps a compromise can be reac
On 05/15/2013 03:35 PM, Dan Magenheimer wrote:
From: Konrad Rzeszutek Wilk
Subject: Re: [PATCHv11 3/4] zswap: add to mm/
Sorry, but I don't think that's appropriate for a patch in the MM subsystem.
I am heading to the airport shortly so this email is a bit hastily typed.
On 05/15/2013 01:09 PM, Seth Jennings wrote:
> On Wed, May 15, 2013 at 02:55:06PM -0400, Konrad Rzeszutek Wilk wrote:
>>> Sorry, but I don't think that's appropriate for a patch in the MM subsystem.
>>
>> Perhaps a compromise can be reached where this code is merged as a driver
>> not a core mm com
On Wed, May 15, 2013 at 02:55:06PM -0400, Konrad Rzeszutek Wilk wrote:
> > Sorry, but I don't think that's appropriate for a patch in the MM subsystem.
>
> I am heading to the airport shortly so this email is a bit hastily typed.
>
> Perhaps a compromise can be reached where this code is merged a
> From: Konrad Rzeszutek Wilk
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> > Sorry, but I don't think that's appropriate for a patch in the MM subsystem.
>
> I am heading to the airport shortly so this email is a bit hastily typed.
>
> Perhaps a comp
> Sorry, but I don't think that's appropriate for a patch in the MM subsystem.
I am heading to the airport shortly so this email is a bit hastily typed.
Perhaps a compromise can be reached where this code is merged as a driver
not a core mm component. There is a high bar to be in the MM - it has
> From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> On Tue, May 14, 2013 at 01:18:48PM -0700, Dan Magenheimer wrote:
> > > From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> > > Subject: Re: [
On Tue, May 14, 2013 at 01:18:48PM -0700, Dan Magenheimer wrote:
> > From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> > Subject: Re: [PATCHv11 3/4] zswap: add to mm/
> >
> >
> >
> > > > +/* The maximum percentage of memory that the compressed p
> From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> On Tue, May 14, 2013 at 09:37:08AM -0700, Dan Magenheimer wrote:
> > > From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> > > Subject: Re: [
> From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
>
>
> > > +/* The maximum percentage of memory that the compressed pool can occupy
> > > */
> > > +static unsigned int zswap_max_po
On Tue, May 14, 2013 at 09:37:08AM -0700, Dan Magenheimer wrote:
> > From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> > Subject: Re: [PATCHv11 3/4] zswap: add to mm/
> >
> > On Tue, May 14, 2013 at 05:19:19PM +0800, Bob Liu wrote:
> > > Hi Seth,
>
> From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> Subject: Re: [PATCHv11 3/4] zswap: add to mm/
>
> On Tue, May 14, 2013 at 05:19:19PM +0800, Bob Liu wrote:
> > Hi Seth,
>
> Hi Bob, thanks for the review!
>
> >
> > > + /* reclaim sp
On Mon, May 13, 2013 at 03:31:42PM -0700, Dan Magenheimer wrote:
> > From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> > Subject: [PATCHv11 3/4] zswap: add to mm/
> >
> > zswap is a thin compression backend for frontswap. It receives pages from
> > frontswap and attempts to store them in
On Tue, May 14, 2013 at 05:19:19PM +0800, Bob Liu wrote:
> Hi Seth,
Hi Bob, thanks for the review!
>
> On 05/13/2013 08:40 PM, Seth Jennings wrote:
> > zswap is a thin compression backend for frontswap. It receives pages from
> > frontswap and attempts to store them in a compressed memory pool,
Hi Seth,
On 05/13/2013 08:40 PM, Seth Jennings wrote:
> zswap is a thin compression backend for frontswap. It receives pages from
> frontswap and attempts to store them in a compressed memory pool, resulting in
> an effective partial memory reclaim and dramatically reduced swap device I/O.
>
> Ad
> From: Seth Jennings [mailto:sjenn...@linux.vnet.ibm.com]
> Subject: [PATCHv11 3/4] zswap: add to mm/
>
> zswap is a thin compression backend for frontswap. It receives pages from
> frontswap and attempts to store them in a compressed memory pool, resulting in
> an effective partial memory reclai
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