From: Shaohua Li <shli@fb.com>
To: Andrew Morton <akpm@linux-foundation.org>
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>
Subject: Re: [PATCH] mremap: add MREMAP_NOHOLE flag --resend
Date: Thu, 19 Mar 2015 09:38:27 -0700 [thread overview]
Message-ID: <20150319163827.GA3006724@devbig257.prn2.facebook.com> (raw)
In-Reply-To: <20150318222246.bc608dd0.akpm@linux-foundation.org>
On Wed, Mar 18, 2015 at 10:22:46PM -0700, Andrew Morton wrote:
> 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?
There is no big difference, except I fixed some issues. Daniel didn't
post data for tcmalloc, I suppose it's potential mremap can make
tcmalloc faster too, but Daniel can clarify.
Thanks,
Shaohua
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next prev parent reply other threads:[~2015-03-19 17:11 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-17 21:09 Shaohua Li
2015-03-18 22:31 ` Andrew Morton
2015-03-19 5:08 ` Shaohua Li
2015-03-19 5:22 ` Andrew Morton
2015-03-19 16:38 ` Shaohua Li [this message]
2015-03-19 5:34 ` Daniel Micay
2015-03-22 6:06 ` Aliaksey Kandratsenka
2015-03-22 7:22 ` Daniel Micay
2015-03-24 4:36 ` Aliaksey Kandratsenka
2015-03-24 14:54 ` Daniel Micay
2015-03-25 16:22 ` Vlastimil Babka
2015-03-25 20:49 ` Daniel Micay
2015-03-25 20:54 ` Daniel Micay
2015-03-26 0:19 ` David Rientjes
2015-03-26 0:24 ` Daniel Micay
2015-03-26 2:31 ` David Rientjes
2015-03-26 3:24 ` Daniel Micay
2015-03-26 3:36 ` Daniel Micay
2015-03-26 17:25 ` Vlastimil Babka
2015-03-26 20:45 ` Daniel Micay
2015-03-23 5:17 ` Shaohua Li
2015-03-24 5:25 ` Aliaksey Kandratsenka
2015-03-24 14:39 ` Daniel Micay
2015-03-25 5:02 ` Shaohua Li
2015-03-26 0:50 ` Minchan Kim
2015-03-26 1:21 ` Daniel Micay
2015-03-26 7:02 ` Minchan Kim
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