All of lore.kernel.org
 help / color / mirror / Atom feed
From: Josef Bacik <jbacik@fb.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>,
	Tom Herbert <tom@herbertland.com>,
	Linux Kernel Network Developers <netdev@vger.kernel.org>
Subject: Re: Soft lockup in inet_put_port on 4.6
Date: Mon, 12 Dec 2016 13:05:29 -0500	[thread overview]
Message-ID: <1481565929.24490.0@smtp.office365.com> (raw)
In-Reply-To: <1481343298.4930.208.camel@edumazet-glaptop3.roam.corp.google.com>

On Fri, Dec 9, 2016 at 11:14 PM, Eric Dumazet <eric.dumazet@gmail.com> 
wrote:
> On Fri, 2016-12-09 at 19:47 -0800, Eric Dumazet wrote:
> 
>> 
>>  Hmm... Is your ephemeral port range includes the port your load
>>  balancing app is using ?
> 
> I suspect that you might have processes doing bind( port = 0) that are
> trapped into the bind_conflict() scan ?
> 
> With 100,000 + timewaits there, this possibly hurts.
> 
> Can you try the following loop breaker ?

It doesn't appear that the app is doing bind(port = 0) during normal 
operation.  I tested this patch and it made no difference.  I'm going 
to test simply restarting the app without changing to the SO_REUSEPORT 
option.  Thanks,

Josef

  reply	other threads:[~2016-12-12 18:05 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-06 23:06 Soft lockup in inet_put_port on 4.6 Tom Herbert
2016-12-08 21:03 ` Hannes Frederic Sowa
2016-12-08 21:36   ` Josef Bacik
2016-12-09  0:30     ` Eric Dumazet
2016-12-09  1:01       ` Josef Bacik
2016-12-10  1:59         ` Josef Bacik
2016-12-10  3:47           ` Eric Dumazet
2016-12-10  4:14             ` Eric Dumazet
2016-12-12 18:05               ` Josef Bacik [this message]
2016-12-12 18:44                 ` Hannes Frederic Sowa
2016-12-12 21:23                   ` Josef Bacik
2016-12-12 22:24                   ` Josef Bacik
2016-12-13 20:51                     ` Tom Herbert
2016-12-13 23:03                       ` Craig Gallek
2016-12-13 23:32                         ` Tom Herbert
2016-12-15 18:53                           ` Josef Bacik
2016-12-15 22:39                             ` Tom Herbert
2016-12-15 23:25                               ` Craig Gallek
2016-12-16  0:07                             ` Hannes Frederic Sowa
2016-12-16 14:54                               ` Josef Bacik
2016-12-16 15:21                                 ` Josef Bacik
2016-12-16 22:08                                   ` Josef Bacik
2016-12-16 22:18                                     ` Tom Herbert
2016-12-16 22:50                                       ` Josef Bacik
2016-12-17 11:08                                         ` Hannes Frederic Sowa
2016-12-17 13:26                                           ` Josef Bacik
2016-12-20  1:56                                             ` David Miller
2016-12-20  2:07                                               ` Tom Herbert
2016-12-20  2:41                                                 ` Eric Dumazet
2016-12-20  3:40                                                   ` Josef Bacik
2016-12-20  4:52                                                     ` Eric Dumazet
2016-12-20  4:59                                                       ` Josef Bacik

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1481565929.24490.0@smtp.office365.com \
    --to=jbacik@fb.com \
    --cc=eric.dumazet@gmail.com \
    --cc=hannes@stressinduktion.org \
    --cc=netdev@vger.kernel.org \
    --cc=tom@herbertland.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.