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From: Samuel Kadolph <samuel.kadolph-BqItboTaHx1BDgjK7y7TUQ@public.gmane.org>
To: "Rainbows! list" <rainbows-talk-GrnCvJ7WPxnNLxjTenLetw@public.gmane.org>
Cc: Cody Fauser <cody.fauser-BqItboTaHx1BDgjK7y7TUQ@public.gmane.org>,
	ops <ops-BqItboTaHx1BDgjK7y7TUQ@public.gmane.org>,
	Harry Brundage
	<harry.brundage-BqItboTaHx1BDgjK7y7TUQ@public.gmane.org>,
	Jonathan Rudenberg
	<jonathan.rudenberg-BqItboTaHx1BDgjK7y7TUQ@public.gmane.org>
Subject: Re: Unicorn is killing our rainbows workers
Date: Tue, 31 Jul 2012 10:09:08 -0400	[thread overview]
Message-ID: <CAFFC5+OYa5+nVqLFnzVkfAyq8WU57QztkvcP5tdSBDWU-2+SaQ@mail.gmail.com> (raw)
In-Reply-To: <20120727204040.GA2192-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>

On Fri, Jul 27, 2012 at 4:40 PM, Eric Wong <normalperson-rMlxZR9MS24@public.gmane.org> wrote:
> Samuel Kadolph <samuel.kadolph-BqItboTaHx1BDgjK7y7TUQ@public.gmane.org> wrote:
>> On Thu, Jul 26, 2012 at 8:11 PM, Eric Wong <normalperson-rMlxZR9MS24@public.gmane.org> wrote:
>> >> Our ops guys have been busy so I don't have the output from lsof but
>> >> it didn't look like it was spawning any extra threads or opening any
>> >> unexplainable connections. But I think we should have been checking
>> >> the worker processes and not the master, right?
>> >
>> > Definitely check the master, too.  It's the master that seems to
>> > believe it's suspended, so that makes me believe something is wrong
>> > with the master (and this is likely due to preload_app).
>> >
>> >> Haven't tried disabling preload_app yet but we have tried
>>
>> I've got the output of lsof and ls at https://gist.github.com/3190171.
>
> Thanks, that's the output for the master?  I don't see anything
> obviously wrong.
>
> I seem to recall the Ruby library responsible for the following log file
> also spawns its own background thread, but your "ls" only shows 2 tasks
> (instead of 3):
>
>> ruby    26564 root    9w   REG              202,1     51221   529742 APP_PATH/shared/log/newrelic_agent.log
>
>> $ ls /proc/26564/task/
>> 26564  27052
>
> (While the Ruby code for the module responsible for that log file is
>  technically "open", it's not Free, so I'm not comfortable looking at
>  that code).

So 2 updates: yes that lsof output is from the master process and
using preload_app false solves the issue. No more killings and the
suspend/hibernation messages stopped as well. We lost newrelic data so
we're going to try putting preload_app back to true and removing the
newrelic gem.
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  parent reply	other threads:[~2012-07-31 14:09 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-18 18:52 Unicorn is killing our rainbows workers Samuel Kadolph
     [not found] ` <CAFFC5+MUdUoXhBXvw8VnnVAZsQpN1idELr0nc_Xm0HYcdtQVhA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-18 19:20   ` Jason Lewis
2012-07-18 21:52   ` Eric Wong
     [not found]     ` <20120718215222.GA11539-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-18 23:06       ` Samuel Kadolph
     [not found]         ` <CAFFC5+N=_bnyM=0WbtLxPAncs0TV4wA9P8TXZ_-T3qOtW-+w3Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-19  0:26           ` Eric Wong
     [not found]             ` <20120719002641.GA17210-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-19 14:29               ` Samuel Kadolph
     [not found]                 ` <CAFFC5+NfChEobr7asqPx+3-U8_mHZqOgCLjRw=w6iCZ=z0-oCg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-19 20:16                   ` Eric Wong
     [not found]                     ` <20120719201633.GA8203-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-19 20:57                       ` Samuel Kadolph
     [not found]                         ` <CAFFC5+NiPhu3oyEZ8woDdmH1zdPDDy9-fK3FhWPqv-6u=yFxgg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-19 21:31                           ` Eric Wong
     [not found]                             ` <20120719213125.GA17708-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-20  0:23                               ` Samuel Kadolph
     [not found]                                 ` <CAFFC5+MKdkmLknbLeRzMNzfTVoyj9JDahFSd1Nb90vsbgS4fuQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-26 23:48                                   ` Eric Wong
     [not found]                                     ` <20120726234845.GA29453-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-27  0:00                                       ` Samuel Kadolph
     [not found]                                         ` <CAFFC5+PvKhbRWH9aLKgc3k-z+2tEPpqLrMa5+6mEUnO2K_X+9Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-27  0:11                                           ` Eric Wong
     [not found]                                             ` <20120727001125.GA30957-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-27 20:01                                               ` Samuel Kadolph
     [not found]                                                 ` <CAFFC5+MqyVEfLJN2rxae7_NPOT=8+X4cBbTz6YYgLzuC8ySXjg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-27 20:40                                                   ` Eric Wong
     [not found]                                                     ` <20120727204040.GA2192-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-07-31 14:09                                                       ` Samuel Kadolph [this message]
     [not found]                                                         ` <CAFFC5+OYa5+nVqLFnzVkfAyq8WU57QztkvcP5tdSBDWU-2+SaQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-07-31 20:28                                                           ` Eric Wong

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