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Date: Wed, 18 Mar 2015 22:22:46 -0700
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mremap: add MREMAP_NOHOLE flag --resend
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To: Shaohua Li <shli@fb.com>
Cc: linux-mm@kvack.org, danielmicay@gmail.com, linux-api@vger.kernel.org, Rik van Riel <riel@redhat.com>, Hugh Dickins <hughd@google.com>, Mel Gorman <mel@csn.ul.ie>, Johannes Weiner <hannes@cmpxchg.org>, Michal Hocko <mhocko@suse.cz>, Andy Lutomirski <luto@amacapital.net>

On Wed, 18 Mar 2015 22:08:26 -0700 Shaohua Li <shli@fb.com> wrote:

> > Daniel also had microbenchmark testing results for glibc and jemalloc. 
> > Can you please do this?
> 
> I run Daniel's microbenchmark too, and not surprise the result is
> similar:
> glibc: 32.82
> jemalloc: 70.35
> jemalloc+mremap: 33.01
> tcmalloc: 68.81
> 
> but tcmalloc doesn't support mremap currently, so I cant test it.

But Daniel's changelog implies strongly that tcmalloc would benefit
from his patch.  Was that inaccurate or is this a difference between
his patch and yours?

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