From: Al Viro <viro@ftp.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Kyle Moffett <mrmacman_g4@mac.com>,
Ulrich Drepper <drepper@redhat.com>,
Davide Libenzi <davidel@xmailserver.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, Theodore Tso <tytso@mit.edu>,
Eric Dumazet <dada1@cosmosbay.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [patch 7/8] fdmap v2 - implement sys_socket2
Date: Sun, 10 Jun 2007 05:06:42 +0100 [thread overview]
Message-ID: <20070610040642.GE21478@ftp.linux.org.uk> (raw)
In-Reply-To: <alpine.LFD.0.98.0706092102300.20321@woody.linux-foundation.org>
On Sat, Jun 09, 2007 at 09:03:23PM -0700, Linus Torvalds wrote:
>
>
> On Sun, 10 Jun 2007, Al Viro wrote:
>
> > On Sat, Jun 09, 2007 at 08:48:39PM -0700, Linus Torvalds wrote:
> > > Agreed. That was actually part of the reason why I thought clone() was
> > > much better than the pthreads interface.
> > >
> > > That said, the Linux !CLONE_FILES does have downsides:
> > >
> > > - it is potentially much slower to do than sharing everything (if you
> > > have lots of file descriptors, incrementing the refcounts etc is
> > > actually a real overhead)
> >
> > Huh? We _skip_ the overhead when descriptor table is not shared.
>
> Not for clone()/exit(), ie the actual _creation_ of the thread.
Umm... Yes, but that depends on the time when that sucker is started and
the lifetime. IOW, we really need specific examples.
next prev parent reply other threads:[~2007-06-10 4:06 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-06 22:30 [patch 7/8] fdmap v2 - implement sys_socket2 Davide Libenzi
2007-06-06 22:44 ` David Miller
2007-06-06 22:52 ` Davide Libenzi
2007-06-06 22:57 ` David Miller
2007-06-06 22:57 ` Ulrich Drepper
2007-06-06 23:02 ` David Miller
2007-06-06 22:59 ` Alan Cox
2007-06-06 22:58 ` Ulrich Drepper
2007-06-06 23:04 ` Davide Libenzi
2007-06-06 23:08 ` David Miller
2007-06-06 23:19 ` Alan Cox
2007-06-06 23:22 ` Ulrich Drepper
2007-06-07 10:04 ` Alan Cox
2007-06-07 11:59 ` Kyle Moffett
2007-06-07 13:12 ` Eric Dumazet
2007-06-07 15:51 ` Davide Libenzi
2007-06-07 19:49 ` Davide Libenzi
2007-06-07 20:02 ` Ulrich Drepper
2007-06-07 20:05 ` Eric Dumazet
2007-06-07 20:18 ` Ulrich Drepper
2007-06-07 21:44 ` Davide Libenzi
2007-06-07 22:03 ` Ulrich Drepper
2007-06-07 22:40 ` Davide Libenzi
2007-06-08 12:07 ` Theodore Tso
2007-06-08 13:01 ` Alan Cox
2007-06-08 18:11 ` Davide Libenzi
2007-06-08 18:26 ` Alan Cox
2007-06-08 18:43 ` Ulrich Drepper
2007-06-08 18:46 ` Al Viro
2007-06-08 18:56 ` Ulrich Drepper
2007-06-08 19:07 ` Linus Torvalds
2007-06-08 19:21 ` Davide Libenzi
2007-06-09 0:03 ` Linus Torvalds
2007-06-09 0:13 ` Davide Libenzi
2007-06-09 0:36 ` Al Viro
2007-06-09 1:19 ` Ulrich Drepper
2007-06-09 1:41 ` Al Viro
2007-06-09 2:10 ` Ulrich Drepper
2007-06-09 15:15 ` Al Viro
2007-06-09 16:26 ` Ulrich Drepper
2007-06-09 16:54 ` Al Viro
2007-06-09 17:04 ` Davide Libenzi
2007-06-09 17:08 ` Davide Libenzi
2007-06-09 17:08 ` Ulrich Drepper
2007-06-09 17:24 ` Al Viro
2007-06-09 19:27 ` Kyle Moffett
2007-06-09 20:06 ` Al Viro
2007-06-09 20:21 ` Linus Torvalds
2007-06-09 20:31 ` Davide Libenzi
2007-06-09 21:41 ` Matt Mackall
2007-06-09 22:12 ` Davide Libenzi
2007-06-09 20:49 ` Al Viro
2007-06-09 21:55 ` Matt Mackall
2007-06-09 23:33 ` Linus Torvalds
2007-06-10 3:35 ` Davide Libenzi
2007-06-10 3:49 ` Davide Libenzi
2007-06-10 3:19 ` Al Viro
2007-06-10 3:48 ` Linus Torvalds
2007-06-10 4:00 ` Al Viro
2007-06-10 4:03 ` Linus Torvalds
2007-06-10 4:06 ` Al Viro [this message]
2007-06-10 4:45 ` dean gaudet
2007-06-10 5:06 ` Linus Torvalds
2007-06-10 5:46 ` Al Viro
2007-06-10 17:23 ` Linus Torvalds
2007-06-10 6:35 ` Kari Hurtta
2007-06-10 15:21 ` Alan Cox
2007-06-10 9:14 ` Eric Dumazet
2007-06-10 15:16 ` Alan Cox
2007-06-10 18:19 ` Linus Torvalds
2007-06-10 2:40 ` Al Viro
2007-06-08 19:34 ` Alan Cox
2007-06-08 19:30 ` Alan Cox
2007-06-08 19:37 ` Davide Libenzi
2007-06-08 19:48 ` Alan Cox
2007-06-08 19:51 ` Davide Libenzi
2007-06-08 21:24 ` Alan Cox
2007-06-08 21:59 ` Davide Libenzi
2007-06-08 22:28 ` Alan Cox
2007-06-08 22:38 ` Davide Libenzi
2007-06-11 8:24 ` Xavier Bestel
2007-06-08 19:22 ` Davide Libenzi
2007-06-09 5:41 ` Paul Mackerras
2007-06-09 14:38 ` Kyle Moffett
2007-06-10 6:48 ` Paul Mackerras
2007-06-10 15:56 ` Davide Libenzi
2007-06-10 19:16 ` Davide Libenzi
2007-06-09 17:00 ` Davide Libenzi
2007-06-10 6:26 ` Paul Mackerras
2007-06-10 7:10 ` William Lee Irwin III
2007-06-10 15:52 ` Davide Libenzi
2007-06-08 18:07 ` Davide Libenzi
2007-06-08 18:35 ` Linus Torvalds
2007-06-07 21:57 ` Davide Libenzi
2007-06-08 4:38 ` Eric Dumazet
2007-06-08 5:20 ` Davide Libenzi
2007-06-07 14:25 ` Ulrich Drepper
2007-06-07 17:56 ` Eric Dumazet
2007-06-07 18:03 ` Davide Libenzi
2007-06-07 18:57 ` Eric Dumazet
2007-06-07 18:26 ` Ulrich Drepper
2007-06-07 18:39 ` Davide Libenzi
2007-06-07 18:56 ` Ulrich Drepper
2007-06-07 19:12 ` Davide Libenzi
2007-06-07 20:03 ` Andrew Morton
2007-06-08 2:55 ` Ulrich Drepper
2007-06-08 5:16 ` Davide Libenzi
2007-06-06 23:29 ` Davide Libenzi
2007-06-07 10:06 ` Alan Cox
2007-06-07 10:45 ` Eric Dumazet
2007-06-07 11:27 ` Alan Cox
2007-06-07 15:41 ` Davide Libenzi
2007-06-07 20:10 ` Linus Torvalds
2007-06-07 20:47 ` Eric Dumazet
2007-06-07 21:08 ` Linus Torvalds
2007-06-07 21:41 ` Davide Libenzi
2007-06-07 20:59 ` Guillaume Chazarain
2007-06-07 21:06 ` Guillaume Chazarain
2007-06-07 21:31 ` Ulrich Drepper
2007-06-07 22:22 ` Davide Libenzi
2007-06-07 23:42 ` Linus Torvalds
2007-06-08 0:04 ` Davide Libenzi
2007-06-08 0:59 ` Matt Mackall
2007-06-08 2:25 ` Linus Torvalds
2007-06-08 15:56 ` Jeff Dike
2007-06-07 0:29 ` Arnd Bergmann
2007-06-07 0:33 ` Davide Libenzi
-- strict thread matches above, loose matches on Subject: below --
2007-06-06 22:30 [patch 1/8] fdmap v2 - fdmap core Davide Libenzi
2007-06-07 6:54 ` Eric Dumazet
2007-06-07 7:10 ` Davide Libenzi
2007-06-07 10:39 ` [patch 7/8] fdmap v2 - implement sys_socket2 Eric Dumazet
2007-06-07 15:42 ` Davide Libenzi
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