From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: [PATCH] mremap: add MREMAP_NOHOLE flag --resend
Date: Wed, 18 Mar 2015 22:22:46 -0700
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To: Shaohua Li <shli-b10kYP2dOMg@public.gmane.org>
Cc: linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, danielmicay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rik van Riel <riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Hugh Dickins <hughd-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Mel Gorman <mel-wPRd99KPJ+uzQB+pC5nmwQ@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>, Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
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On Wed, 18 Mar 2015 22:08:26 -0700 Shaohua Li <shli-b10kYP2dOMg@public.gmane.org> 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?