From: Andrea Arcangeli <aarcange@redhat.com>
To: Rik van Riel <riel@redhat.com>
Cc: Izik Eidus <ieidus@redhat.com>,
akpm@linux-foundation.org, hugh.dickins@tiscali.co.uk,
chrisw@redhat.com, avi@redhat.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, nickpiggin@yahoo.com.au,
Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH 06/10] ksm: identify PageKsm pages
Date: Tue, 21 Jul 2009 20:01:00 +0200 [thread overview]
Message-ID: <20090721180059.GG2239@random.random> (raw)
In-Reply-To: <4A660101.3000307@redhat.com>
On Tue, Jul 21, 2009 at 01:55:13PM -0400, Rik van Riel wrote:
> I guess that if they are to remain unswappable, they
> should go onto the unevictable list.
They should indeed. Not urgent but it will optimize the vm (as in
virtual memory) cpu load a bit.
> Then again, I'm guessing this is all about to change
> in not too much time :)
That's my point, current implementation of PageKsm don't seem to last
long, and if we keep logic the same it'll likely happen soon that
PageKsm != PageAnon on a Ksm page. So I'd rather keep it different
even now, given I doubt it's moving the needle anywhere in ksm code.
WARNING: multiple messages have this Message-ID (diff)
From: Andrea Arcangeli <aarcange@redhat.com>
To: Rik van Riel <riel@redhat.com>
Cc: Izik Eidus <ieidus@redhat.com>,
akpm@linux-foundation.org, hugh.dickins@tiscali.co.uk,
chrisw@redhat.com, avi@redhat.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, nickpiggin@yahoo.com.au,
Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH 06/10] ksm: identify PageKsm pages
Date: Tue, 21 Jul 2009 20:01:00 +0200 [thread overview]
Message-ID: <20090721180059.GG2239@random.random> (raw)
In-Reply-To: <4A660101.3000307@redhat.com>
On Tue, Jul 21, 2009 at 01:55:13PM -0400, Rik van Riel wrote:
> I guess that if they are to remain unswappable, they
> should go onto the unevictable list.
They should indeed. Not urgent but it will optimize the vm (as in
virtual memory) cpu load a bit.
> Then again, I'm guessing this is all about to change
> in not too much time :)
That's my point, current implementation of PageKsm don't seem to last
long, and if we keep logic the same it'll likely happen soon that
PageKsm != PageAnon on a Ksm page. So I'd rather keep it different
even now, given I doubt it's moving the needle anywhere in ksm code.
--
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next prev parent reply other threads:[~2009-07-21 18:01 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-17 17:30 [PATCH 00/10] ksm resend Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 01/10] ksm: add mmu_notifier set_pte_at_notify() Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 02/10] ksm: first tidy up madvise_vma() Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 03/10] ksm: define MADV_MERGEABLE and MADV_UNMERGEABLE Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 04/10] ksm: the mm interface to ksm Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 05/10] ksm: no debug in page_dup_rmap() Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 06/10] ksm: identify PageKsm pages Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 07/10] ksm: Kernel SamePage Merging Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 08/10] ksm: prevent mremap move poisoning Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 09/10] ksm: change copyright message Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-17 17:30 ` [PATCH 10/10] ksm: change ksm nice level to be 5 Izik Eidus
2009-07-17 17:30 ` Izik Eidus
2009-07-19 13:50 ` Hugh Dickins
2009-07-19 13:50 ` Hugh Dickins
2009-07-20 4:50 ` Balbir Singh
2009-07-20 4:50 ` Balbir Singh
2009-07-20 11:48 ` Izik Eidus
2009-07-20 11:48 ` Izik Eidus
2009-07-20 12:14 ` Balbir Singh
2009-07-20 12:14 ` Balbir Singh
2009-07-20 18:38 ` Rik van Riel
2009-07-20 18:38 ` Rik van Riel
2009-07-19 13:49 ` [PATCH 09/10] ksm: change copyright message Hugh Dickins
2009-07-19 13:49 ` Hugh Dickins
2009-07-20 18:37 ` Rik van Riel
2009-07-20 18:37 ` Rik van Riel
2009-07-20 18:37 ` [PATCH 08/10] ksm: prevent mremap move poisoning Rik van Riel
2009-07-20 18:37 ` Rik van Riel
2009-07-20 18:35 ` [PATCH 07/10] ksm: Kernel SamePage Merging Rik van Riel
2009-07-20 18:35 ` Rik van Riel
2009-07-18 2:45 ` [PATCH 06/10] ksm: identify PageKsm pages Wu Fengguang
2009-07-18 2:45 ` Wu Fengguang
2009-07-20 18:32 ` Rik van Riel
2009-07-20 18:32 ` Rik van Riel
2009-07-21 17:51 ` Andrea Arcangeli
2009-07-21 17:51 ` Andrea Arcangeli
2009-07-21 17:55 ` Rik van Riel
2009-07-21 17:55 ` Rik van Riel
2009-07-21 18:01 ` Andrea Arcangeli [this message]
2009-07-21 18:01 ` Andrea Arcangeli
2009-07-21 18:17 ` Izik Eidus
2009-07-21 18:17 ` Izik Eidus
2009-07-22 12:54 ` Hugh Dickins
2009-07-22 12:54 ` Hugh Dickins
2009-07-23 2:06 ` KAMEZAWA Hiroyuki
2009-07-23 2:06 ` KAMEZAWA Hiroyuki
2009-07-23 11:43 ` Hugh Dickins
2009-07-23 11:43 ` Hugh Dickins
2009-07-23 11:49 ` Lee Schermerhorn
2009-07-23 11:49 ` Lee Schermerhorn
2009-07-22 12:45 ` Hugh Dickins
2009-07-22 12:45 ` Hugh Dickins
2009-07-22 16:52 ` Andrea Arcangeli
2009-07-22 16:52 ` Andrea Arcangeli
2009-07-23 11:36 ` Hugh Dickins
2009-07-23 11:36 ` Hugh Dickins
2009-07-20 18:11 ` [PATCH 05/10] ksm: no debug in page_dup_rmap() Rik van Riel
2009-07-20 18:11 ` Rik van Riel
2009-07-21 7:16 ` Nick Piggin
2009-07-21 7:16 ` Nick Piggin
2009-07-20 17:38 ` [PATCH 04/10] ksm: the mm interface to ksm Rik van Riel
2009-07-20 17:38 ` Rik van Riel
2009-07-20 15:09 ` [PATCH 03/10] ksm: define MADV_MERGEABLE and MADV_UNMERGEABLE Rik van Riel
2009-07-20 15:09 ` Rik van Riel
2009-07-20 15:44 ` Ralf Baechle
2009-07-20 15:44 ` Ralf Baechle
2009-07-20 15:05 ` [PATCH 02/10] ksm: first tidy up madvise_vma() Rik van Riel
2009-07-20 15:05 ` Rik van Riel
2009-07-20 14:48 ` [PATCH 01/10] ksm: add mmu_notifier set_pte_at_notify() Rik van Riel
2009-07-20 14:48 ` Rik van Riel
2009-07-21 17:59 ` [PATCH 00/10] ksm resend Andrea Arcangeli
2009-07-21 17:59 ` Andrea Arcangeli
2009-07-22 13:05 ` Hugh Dickins
2009-07-22 13:05 ` Hugh Dickins
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