From: David Mosberger <davidm@napali.hpl.hp.com>
To: "David S. Miller" <davem@redhat.com>
Cc: davidm@hpl.hp.com, davidm@napali.hpl.hp.com, gh@us.ibm.com,
riel@conectiva.com.br, akpm@zip.com.au,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
rohit.seth@intel.com, sunil.saxena@intel.com,
asit.k.mallick@intel.com
Subject: Re: large page patch
Date: Fri, 2 Aug 2002 08:27:00 -0700 [thread overview]
Message-ID: <15690.42180.82563.681075@napali.hpl.hp.com> (raw)
In-Reply-To: <20020802.012040.105531210.davem@redhat.com>
>>>>> On Fri, 02 Aug 2002 01:20:40 -0700 (PDT), "David S. Miller" <davem@redhat.com> said:
Dave.M> A "hint" to use superpages? That's absurd.
Dave.M> Any time you are able to translate N pages instead of 1 page
Dave.M> with 1 TLB entry it's always preferable.
Yeah, right. So you think a 256MB page-size is optimal for all apps?
What you're missing is how you *get* to the point where you can map N
pages with a single TLB entry. For that to happen, you need to
allocate physically contiguous and properly aligned memory (at least
given the hw that's common today). Doing has certain costs, no matter
what your approach is.
--david
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next prev parent reply other threads:[~2002-08-02 15:27 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-02 0:37 Andrew Morton
2002-08-02 0:43 ` David S. Miller
2002-08-02 1:26 ` Andrew Morton
2002-08-02 1:19 ` David S. Miller
2002-08-02 1:55 ` Rik van Riel
2002-08-02 1:50 ` David S. Miller
2002-08-02 2:29 ` Gerrit Huizenga
2002-08-02 2:23 ` David S. Miller
2002-08-02 2:53 ` Gerrit Huizenga
2002-08-02 5:24 ` David Mosberger
2002-08-02 5:20 ` David S. Miller
2002-08-02 6:26 ` David Mosberger
2002-08-02 6:33 ` Martin J. Bligh
2002-08-02 6:44 ` David Mosberger
2002-08-02 10:00 ` Marcin Dalecki
2002-08-02 7:08 ` Andrew Morton
2002-08-02 7:15 ` William Lee Irwin III
2002-08-02 8:20 ` David S. Miller
2002-08-02 9:05 ` Ryan Cumming
2002-08-02 9:06 ` David S. Miller
2002-08-02 12:52 ` Rik van Riel
2002-08-02 15:27 ` David Mosberger [this message]
2002-08-02 1:09 ` Martin J. Bligh
2002-08-02 1:36 ` Andrew Morton
2002-08-02 4:31 ` Daniel Phillips
2002-08-02 4:47 ` Andrew Morton
2002-08-02 3:47 ` William Lee Irwin III
2002-08-02 23:40 ` Chris Wedgwood
2002-08-02 1:34 Seth, Rohit
2002-08-02 19:31 Seth, Rohit
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