From: Patrick McManus <mcmanus@ducksong.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: "Ilpo Järvinen" <ilpo.jarvinen@helsinki.fi>,
"Peter Zijlstra" <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Netdev <netdev@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Evgeniy Polyakov" <johnpol@2ka.mipt.ru>
Subject: Re: [fixed] [patch] Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+
Date: Tue, 03 Jun 2008 10:41:22 -0400 [thread overview]
Message-ID: <1212504082.28319.155.camel@tng> (raw)
In-Reply-To: <20080603094057.GA29480@elte.hu>
On Tue, 2008-06-03 at 11:40 +0200, Ingo Molnar wrote:
> * Ingo Molnar <mingo@elte.hu> wrote:
>
> > > ...setsockopt(listenfd, SOL_TCP, TCP_DEFER_ACCEPT, &val,
> > > sizeof(val)) seems to be the magic trick that is interestion here.
> >
> > seems to be used:
> >
> > 22003 write(3, "distccd[22003] (dcc_listen_by_ad"..., 62) = 62
> > 22003 listen(4, 10) = 0
> > 22003 setsockopt(4, SOL_TCP, TCP_DEFER_ACCEPT, [1], 4) = 0
> >
> > i'll queue up your reverts for testing in -tip.
>
> update: your 3 reverts in tip/out-of-tree [commit dad98991c] definitely
> fixed the hangs!
>
> Here is the testing i did:
hm.
Here's a theory - the DA code put the socket in the accept queue after
data has been queued on the socket, instead of the other way around
which is normal.
Could this be confusing the select() mechanism?
-Pat
next prev parent reply other threads:[~2008-06-03 14:40 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-26 11:56 [bug] stuck localhost TCP connections, v2.6.26-rc3+ Ingo Molnar
2008-05-26 13:28 ` Ilpo Järvinen
2008-05-26 13:59 ` Ingo Molnar
2008-05-26 14:12 ` Ingo Molnar
2008-05-26 14:17 ` Ingo Molnar
2008-05-26 14:29 ` Ingo Molnar
2008-05-26 14:43 ` Ilpo Järvinen
2008-05-26 14:58 ` Ilpo Järvinen
2008-05-26 16:23 ` Ingo Molnar
2008-05-26 16:32 ` Ilpo Järvinen
2008-05-26 16:54 ` Ingo Molnar
2008-05-26 17:08 ` Ilpo Järvinen
2008-05-26 18:12 ` Ingo Molnar
2008-05-26 20:41 ` Ingo Molnar
2008-05-26 21:20 ` Ilpo Järvinen
2008-05-30 16:23 ` Ray Lee
2008-05-26 16:24 ` Arjan van de Ven
2008-05-28 9:27 ` Peter Zijlstra
2008-05-31 14:25 ` Håkon Løvdal
2008-05-31 16:09 ` Ilpo Järvinen
2008-05-31 17:22 ` Ilpo Järvinen
2008-05-31 17:58 ` Håkon Løvdal
2008-05-31 18:37 ` Ilpo Järvinen
2008-05-31 20:25 ` Håkon Løvdal
2008-05-31 21:39 ` Ilpo Järvinen
2008-05-31 21:45 ` Håkon Løvdal
2008-06-04 0:10 ` Håkon Løvdal
2008-06-04 11:14 ` Ilpo Järvinen
2008-06-04 14:00 ` Håkon Løvdal
2008-06-04 15:09 ` Ilpo Järvinen
2008-06-06 9:32 ` Håkon Løvdal
2008-06-09 19:24 ` Ilpo Järvinen
2008-06-10 23:26 ` Håkon Løvdal
2008-06-11 13:39 ` Ilpo Järvinen
2008-06-19 0:30 ` Håkon Løvdal
2008-05-29 8:45 ` Ingo Molnar
2008-05-29 11:14 ` Ilpo Järvinen
2008-05-29 11:22 ` Ingo Molnar
2008-05-29 13:05 ` Evgeniy Polyakov
2008-05-29 13:43 ` Ingo Molnar
2008-05-29 13:08 ` Ingo Molnar
2008-05-29 13:48 ` Ilpo Järvinen
2008-05-30 11:09 ` Ingo Molnar
2008-05-30 21:12 ` Ilpo Järvinen
2008-05-30 18:18 ` Ingo Molnar
2008-05-31 6:09 ` Ingo Molnar
2008-05-31 11:46 ` Ilpo Järvinen
2008-05-31 12:18 ` Ilpo Järvinen
2008-05-31 12:54 ` Ingo Molnar
2008-05-31 12:58 ` Ilpo Järvinen
2008-05-31 16:35 ` Ingo Molnar
2008-05-31 22:46 ` Patrick McManus
2008-06-01 5:51 ` Ilpo Järvinen
2008-06-01 6:04 ` Eric Dumazet
2008-06-02 9:23 ` Ingo Molnar
2008-06-03 9:40 ` [fixed] [patch] " Ingo Molnar
2008-06-03 14:41 ` Patrick McManus [this message]
2008-06-03 21:46 ` Ilpo Järvinen
2008-06-03 22:01 ` Ilpo Järvinen
2008-06-03 22:03 ` David Miller
2008-06-03 22:10 ` Ilpo Järvinen
2008-06-03 23:22 ` Ilpo Järvinen
2008-06-03 23:54 ` Joe Perches
2008-06-04 6:25 ` Ilpo Järvinen
2008-06-04 2:54 ` Patrick McManus
2008-06-04 6:42 ` Ilpo Järvinen
2008-06-05 14:22 ` Ingo Molnar
2008-06-05 18:00 ` Ilpo Järvinen
2008-06-05 21:13 ` Ilpo Järvinen
2008-06-05 23:29 ` Patrick McManus
2008-06-06 10:03 ` Ilpo Järvinen
2008-06-06 17:11 ` Patrick McManus
2008-06-06 17:33 ` Ingo Molnar
2008-06-06 18:19 ` Ilpo Järvinen
2008-06-06 18:39 ` Ingo Molnar
2008-06-06 19:49 ` Ilpo Järvinen
2008-06-06 20:08 ` Patrick McManus
2008-06-06 21:12 ` Ilpo Järvinen
2008-06-06 21:23 ` Arjan van de Ven
2008-06-06 21:28 ` Ilpo Järvinen
2008-06-10 22:49 ` David Miller
2008-06-06 18:25 ` Ilpo Järvinen
2008-06-10 22:32 ` David Miller
2008-06-11 13:10 ` Patrick McManus
2008-06-11 15:13 ` Ilpo Järvinen
2008-06-04 7:23 ` Ingo Molnar
2008-06-04 18:24 ` David Miller
2008-06-04 20:56 ` Ilpo Järvinen
2008-06-04 21:55 ` David Miller
-- strict thread matches above, loose matches on Subject: below --
2008-06-11 15:06 Alexey Kuznetsov
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