From: Hans Schillstrom <hans.schillstrom@ericsson.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Hagen Paul Pfeifer <hagen@jauu.net>,
David Miller <davem@davemloft.net>,
"equinox@diac24.net" <equinox@diac24.net>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: RFC Hanging clean-up of a namespace
Date: Mon, 23 Jan 2012 07:58:54 +0100 [thread overview]
Message-ID: <201201230758.55200.hans.schillstrom@ericsson.com> (raw)
In-Reply-To: <m1aa5frl3j.fsf@fess.ebiederm.org>
On Monday 23 January 2012 07:25:52 Eric W. Biederman wrote:
> Hans Schillstrom <hans.schillstrom@ericsson.com> writes:
>
> > On Friday 20 January 2012 21:55:27 Eric W. Biederman wrote:
> >> My current hypothesis is that the namespace actually didn't get freed
> >> until the tcp socket finished closing. You can check by looking at when
> >> __put_net and then cleanup_net are called.
> >
> > __put_net() is called just after tcp_write_timer() fires and then
> > cleanup_net()
>
> Hypothesis confirmed. Your speed problem is that it is taking 2 minutes
> in the pathological case for your tcp socket to close.
>
> Do you have any clue why it is taking your sockets so long to close?
> Is the other side simply not responding?
>
The root cause of death is that the other side (init_net namespace) dies first
and when it dies all containers will be killed ...
/Hans
next prev parent reply other threads:[~2012-01-23 6:58 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-19 11:07 RFC Hanging clean-up of a namespace Hans Schillstrom
2012-01-19 13:31 ` David Lamparter
2012-01-19 17:40 ` David Miller
2012-01-19 19:01 ` David Lamparter
2012-01-19 19:06 ` David Miller
2012-01-19 19:25 ` David Lamparter
2012-01-19 19:31 ` David Miller
2012-01-19 19:53 ` David Lamparter
2012-01-19 20:27 ` David Miller
2012-01-19 21:03 ` David Lamparter
2012-01-19 21:24 ` Eric W. Biederman
2012-01-19 21:40 ` David Lamparter
2012-01-19 21:40 ` Hagen Paul Pfeifer
2012-01-19 21:47 ` David Lamparter
2012-01-19 22:10 ` Rick Jones
2012-01-19 22:16 ` Hagen Paul Pfeifer
2012-01-19 22:37 ` David Miller
2012-01-20 6:08 ` Hans Schillstrom
2012-01-20 10:08 ` Eric W. Biederman
2012-01-20 11:51 ` Hans Schillstrom
2012-01-20 20:55 ` Eric W. Biederman
2012-01-23 6:07 ` Hans Schillstrom
2012-01-23 6:25 ` Eric W. Biederman
2012-01-23 6:58 ` Hans Schillstrom [this message]
2012-01-23 7:17 ` Eric W. Biederman
2012-01-23 7:30 ` Hans Schillstrom
2012-01-23 7:55 ` Eric W. Biederman
2012-01-19 19:40 ` Hans Schillström
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