From: Vlastimil Babka <vbabka@suse.cz>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Dave Hansen <dave.hansen@intel.com>,
"Odzioba, Lukasz" <lukasz.odzioba@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"Shutemov, Kirill" <kirill.shutemov@intel.com>,
"Anaczkowski, Lukasz" <lukasz.anaczkowski@intel.com>
Subject: Re: mm: pages are not freed from lru_add_pvecs after process termination
Date: Mon, 2 May 2016 17:13:43 +0200 [thread overview]
Message-ID: <57276EA6.5090907@suse.cz> (raw)
In-Reply-To: <20160502150109.GB24419@node.shutemov.name>
On 05/02/2016 05:01 PM, Kirill A. Shutemov wrote:
> On Mon, May 02, 2016 at 04:39:35PM +0200, Vlastimil Babka wrote:
>> On 04/27/2016 07:11 PM, Dave Hansen wrote:
>>> 6. Perhaps don't use the LRU pagevecs for large pages. It limits the
>>> severity of the problem.
>>
>> I think that makes sense. Being large already amortizes the cost per base
>> page much more than pagevecs do (512 vs ~22 pages?).
>
> We try to do this already, don't we? Any spefic case where we have THPs on
> pagevecs?
For example like this?
__do_huge_pmd_anonymous_page
lru_cache_add_active_or_unevictable
lru_cache_add
WARNING: multiple messages have this Message-ID (diff)
From: Vlastimil Babka <vbabka@suse.cz>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Dave Hansen <dave.hansen@intel.com>,
"Odzioba, Lukasz" <lukasz.odzioba@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"Shutemov, Kirill" <kirill.shutemov@intel.com>,
"Anaczkowski, Lukasz" <lukasz.anaczkowski@intel.com>
Subject: Re: mm: pages are not freed from lru_add_pvecs after process termination
Date: Mon, 2 May 2016 17:13:43 +0200 [thread overview]
Message-ID: <57276EA6.5090907@suse.cz> (raw)
In-Reply-To: <20160502150109.GB24419@node.shutemov.name>
On 05/02/2016 05:01 PM, Kirill A. Shutemov wrote:
> On Mon, May 02, 2016 at 04:39:35PM +0200, Vlastimil Babka wrote:
>> On 04/27/2016 07:11 PM, Dave Hansen wrote:
>>> 6. Perhaps don't use the LRU pagevecs for large pages. It limits the
>>> severity of the problem.
>>
>> I think that makes sense. Being large already amortizes the cost per base
>> page much more than pagevecs do (512 vs ~22 pages?).
>
> We try to do this already, don't we? Any spefic case where we have THPs on
> pagevecs?
For example like this?
__do_huge_pmd_anonymous_page
lru_cache_add_active_or_unevictable
lru_cache_add
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-05-02 15:13 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 17:01 mm: pages are not freed from lru_add_pvecs after process termination Odzioba, Lukasz
2016-04-27 17:01 ` Odzioba, Lukasz
2016-04-27 17:11 ` Dave Hansen
2016-04-27 17:11 ` Dave Hansen
2016-04-28 14:37 ` Michal Hocko
2016-04-28 14:37 ` Michal Hocko
2016-05-02 13:00 ` Michal Hocko
2016-05-02 13:00 ` Michal Hocko
2016-05-04 19:41 ` Odzioba, Lukasz
2016-05-04 19:41 ` Odzioba, Lukasz
2016-05-04 20:16 ` Dave Hansen
2016-05-04 20:16 ` Dave Hansen
2016-05-04 20:36 ` Michal Hocko
2016-05-04 20:36 ` Michal Hocko
2016-05-05 7:21 ` Michal Hocko
2016-05-05 7:21 ` Michal Hocko
2016-05-05 17:25 ` Odzioba, Lukasz
2016-05-05 17:25 ` Odzioba, Lukasz
2016-05-11 7:38 ` Michal Hocko
2016-05-11 7:38 ` Michal Hocko
2016-05-06 15:10 ` Odzioba, Lukasz
2016-05-06 15:10 ` Odzioba, Lukasz
2016-05-06 16:04 ` Dave Hansen
2016-05-06 16:04 ` Dave Hansen
2016-05-11 7:53 ` Michal Hocko
2016-05-11 7:53 ` Michal Hocko
2016-05-13 11:29 ` Vlastimil Babka
2016-05-13 11:29 ` Vlastimil Babka
2016-05-13 12:05 ` Odzioba, Lukasz
2016-05-13 12:05 ` Odzioba, Lukasz
2016-06-07 9:02 ` Odzioba, Lukasz
2016-06-07 9:02 ` Odzioba, Lukasz
2016-06-07 11:19 ` Michal Hocko
2016-06-07 11:19 ` Michal Hocko
2016-06-08 8:51 ` Odzioba, Lukasz
2016-06-08 8:51 ` Odzioba, Lukasz
2016-05-02 14:39 ` Vlastimil Babka
2016-05-02 14:39 ` Vlastimil Babka
2016-05-02 15:01 ` Kirill A. Shutemov
2016-05-02 15:01 ` Kirill A. Shutemov
2016-05-02 15:13 ` Vlastimil Babka [this message]
2016-05-02 15:13 ` Vlastimil Babka
2016-05-02 15:49 ` Dave Hansen
2016-05-02 15:49 ` Dave Hansen
2016-05-02 16:02 ` Kirill A. Shutemov
2016-05-02 16:02 ` Kirill A. Shutemov
2016-05-03 7:37 ` Michal Hocko
2016-05-03 7:37 ` Michal Hocko
2016-05-03 10:07 ` Kirill A. Shutemov
2016-05-03 10:07 ` Kirill A. Shutemov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=57276EA6.5090907@suse.cz \
--to=vbabka@suse.cz \
--cc=dave.hansen@intel.com \
--cc=kirill.shutemov@intel.com \
--cc=kirill@shutemov.name \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lukasz.anaczkowski@intel.com \
--cc=lukasz.odzioba@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.