linux-kernel - Re: [PATCH] mm/rmap.c: reuse mergeable anon

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Message-ID: <20191004223311.GA32588@richard>
Date:   Sat, 5 Oct 2019 06:33:11 +0800
From:   Wei Yang <richardw.yang@...ux.intel.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Wei Yang <richardw.yang@...ux.intel.com>,
        akpm@...ux-foundation.org, kirill.shutemov@...ux.intel.com,
        jglisse@...hat.com, mike.kravetz@...cle.com, riel@...riel.com,
        khlebnikov@...dex-team.ru, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/rmap.c: reuse mergeable anon_vma as parent when fork

On Fri, Oct 04, 2019 at 09:11:20AM -0700, Matthew Wilcox wrote:
>On Sat, Oct 05, 2019 at 12:06:32AM +0800, Wei Yang wrote:
>> After this change, kernel build test reduces 20% anon_vma allocation.
>
>But does it have any effect on elapsed time or peak memory consumption?

I didn't evaluate these aspects.

BTW, how to evaluate peak memory consumption? This looks a transient value.

-- 
Wei Yang
Help you, Help me