From: Mauricio Lin <mauriciolin@gmail.com>
To: Andrew Morton <akpm@osdl.org>
Cc: hugh@veritas.com, wli@holomorphy.com,
linux-kernel@vger.kernel.org, rrebel@whenu.com,
marcelo.tosatti@cyclades.com,
Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: [PATCH] A new entry for /proc
Date: Thu, 24 Feb 2005 07:43:05 -0400 [thread overview]
Message-ID: <3f250c710502240343563c5cb0@mail.gmail.com> (raw)
In-Reply-To: <20050224010947.774628f3.akpm@osdl.org>
Hi Andrew,
But can i use jiffies to measure this kind of performance??? AFAIK, if
it is more efficient, then it is faster, right? How can I know how
fast it is? Any idea?
BR,
Mauricio Lin.
On Thu, 24 Feb 2005 01:09:47 -0800, Andrew Morton <akpm@osdl.org> wrote:
> Mauricio Lin <mauriciolin@gmail.com> wrote:
> >
> > You said that the old smaps version is not efficient because the way
> > it access each pte.
>
> Nick is talking about changing the kenrel so that it "refcounts pagetable
> pages". I'm not sure why.
>
> I assume that this means that each pte page's refcount will be incremented
> by one for each instantiated pte. If so, then /proc/pid/smaps can become a
> lot more efficient. Just add up the page refcounts on all the pte pages -
> no need to walk the ptes themselves.
>
> Maybe?
>
next prev parent reply other threads:[~2005-02-24 11:43 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-06 21:11 [PATCH] A new entry for /proc Mauricio Lin
2005-01-07 4:23 ` Andrew Morton
2005-01-07 12:30 ` Roger Luethi
2005-01-08 20:20 ` Hugh Dickins
2005-01-08 21:47 ` Alan Cox
2005-01-10 9:21 ` Edjard Souza Mota
2005-01-10 15:23 ` Mauricio Lin
2005-02-22 13:13 ` Mauricio Lin
2005-02-24 8:31 ` Mauricio Lin
2005-02-24 9:09 ` Andrew Morton
2005-02-24 11:43 ` Mauricio Lin [this message]
2005-02-24 11:52 ` Andrew Morton
2005-02-25 15:14 ` Mauricio Lin
2005-02-28 9:43 ` Mauricio Lin
2005-02-28 9:56 ` Mauricio Lin
2005-02-28 20:41 ` Hugh Dickins
2005-03-01 8:08 ` Mauricio Lin
2005-03-01 14:17 ` Mauricio Lin
2005-03-01 15:44 ` Mauricio Lin
2005-03-02 12:20 ` Mauricio Lin
2005-03-02 19:07 ` Hugh Dickins
2005-03-03 7:25 ` Mauricio Lin
2005-03-03 12:48 ` Hugh Dickins
2005-03-03 14:23 ` Mauricio Lin
2005-01-10 14:35 ` Mauricio Lin
2005-01-14 22:46 ` Mauricio Lin
[not found] ` <20050114154209.6b712e55.akpm@osdl.org>
2005-01-17 18:03 ` Mauricio Lin
2005-01-17 19:02 ` Mauricio Lin
2005-01-17 17:30 ` Marcelo Tosatti
2005-01-17 21:27 ` Mauricio Lin
2005-01-17 21:35 ` William Lee Irwin III
2005-01-18 1:07 ` Nick Piggin
2005-01-19 12:59 ` Nick Piggin
2005-01-24 22:14 ` Mauricio Lin
2005-04-29 18:36 ` Mauricio Lin
2005-04-30 1:25 ` Andrew Morton
-- strict thread matches above, loose matches on Subject: below --
2005-02-24 18:56 Albert Cahalan
2005-03-01 14:32 ` Mauricio Lin
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