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Date: Mon, 2 May 2016 18:01:10 +0300
From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Vlastimil Babka <vbabka@suse.cz>
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
Message-ID: <20160502150109.GB24419@node.shutemov.name>
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 <5720F2A8.6070406@intel.com>
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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?

-- 
 Kirill A. Shutemov