From: "Ulrich Drepper" <drepper@gmail.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Nicholas Miell <nmiell@comcast.net>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH prototype] [0/8] Predictive bitmaps for ELF executables
Date: Sun, 23 Mar 2008 21:20:02 -0700 [thread overview]
Message-ID: <a36005b50803232120j63fb08d8p4a6cfdc8df2a3f21@mail.gmail.com> (raw)
In-Reply-To: <20080322091001.GA7264@one.firstfloor.org>
On Sat, Mar 22, 2008 at 2:10 AM, Andi Kleen <andi@firstfloor.org> wrote:
> > Why not stick the bitmap in an xattr?
>
> xattrs are too small for potentially large binaries and a mess to manage
> (a lot of tools don't know about them)
It does not matter a bit whether any other tool know about the xattrs.
Binaries will not change after they are created to require changing
the attributes. And it is no problem to not back the data up etc.
One really doesn't want to waste these resources.
And as far as the size limitation is concerned. It depends on the
limit, which I don't know off hand. But really, really big binaries
don't have to be treated like this anyway. They are not started
frequently enough to justify this.
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next prev parent reply other threads:[~2008-03-24 4:20 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-18 1:09 Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [1/8] Give ELF shdr types a name Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [2/8] Add support to override mmap exec write protection with O_FORCEWRITE Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [3/8] Make readahead max pinned value a sysctl Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [4/8] Add readahead function to read-ahead based on a bitmap Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [5/8] Add ELF constants for pbitmaps Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [6/8] Core predictive bitmap engine Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [7/8] Add the sysctls to control pbitmaps Andi Kleen
2008-03-18 1:09 ` [PATCH prototype] [8/8] Add mmap_full_slurp support Andi Kleen
2008-03-18 7:36 ` [PATCH prototype] [0/8] Predictive bitmaps for ELF executables Andrew Morton
2008-03-18 14:18 ` Andi Kleen
2008-03-18 16:57 ` Andrew Morton
2008-03-18 17:20 ` Andi Kleen
2008-03-18 17:44 ` Andrew Morton
2008-03-19 8:32 ` Andi Kleen
2008-03-19 9:04 ` Andrew Morton
2008-03-19 22:45 ` Ulrich Drepper
2008-03-19 23:12 ` Andrew Morton
2008-03-20 0:09 ` David Miller, Andrew Morton
2008-03-20 9:00 ` Andi Kleen
2008-03-21 17:15 ` Ulrich Drepper
2008-03-21 17:26 ` Andi Kleen
2008-03-22 4:36 ` Ulrich Drepper
2008-03-22 7:17 ` Andi Kleen
2008-03-22 7:24 ` Nicholas Miell
2008-03-22 9:10 ` Andi Kleen
2008-03-22 10:16 ` Nicholas Miell
2008-03-22 14:29 ` Andi Kleen
2008-03-23 13:25 ` Pavel Machek
2008-03-23 17:08 ` Andi Kleen
2008-03-24 16:24 ` Pavel Machek
2008-03-24 4:20 ` Ulrich Drepper [this message]
2008-03-24 5:16 ` Nicholas Miell
2008-03-24 5:26 ` Andi Kleen
2008-03-24 19:42 ` Ulrich Drepper
2008-03-24 21:47 ` Nicholas Miell
2008-03-25 7:54 ` Andi Kleen
2008-03-26 18:15 ` Ulrich Drepper
2008-03-26 18:54 ` Andi Kleen
2008-03-22 4:38 ` Ulrich Drepper
2008-03-20 0:15 ` Diego Calleja
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