From ajsharp at gmail.com  Fri Jul  1 13:07:44 2011
From: ajsharp at gmail.com (Alex Sharp)
Date: Fri, 1 Jul 2011 10:07:44 -0700
Subject: Timestamp in unicorn logs
Message-ID: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>

I would love to see a timestamp in each line of unicorn stderr and
stdout logs. Has this been considered? Thanks.

Best,

alex sharp

From ghazel at gmail.com  Fri Jul  1 16:33:45 2011
From: ghazel at gmail.com (ghazel at gmail.com)
Date: Fri, 1 Jul 2011 13:33:45 -0700
Subject: Timestamp in unicorn logs
In-Reply-To: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
References: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
Message-ID: <BANLkTimOX8HO7R-vavEFOEWf7nvV9PwOFg@mail.gmail.com>

On Fri, Jul 1, 2011 at 10:07 AM, Alex Sharp <ajsharp at gmail.com> wrote:
> I would love to see a timestamp in each line of unicorn stderr and
> stdout logs. Has this been considered? Thanks.

+1

-Greg

From normalperson at yhbt.net  Fri Jul  1 16:54:34 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Fri, 1 Jul 2011 20:54:34 +0000
Subject: Timestamp in unicorn logs
In-Reply-To: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
References: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
Message-ID: <20110701205434.GA19317@dcvr.yhbt.net>

Alex Sharp <ajsharp at gmail.com> wrote:
> I would love to see a timestamp in each line of unicorn stderr and
> stdout logs. Has this been considered? Thanks.

Unicorn itself never writes directly to stdout[1].  Once daemonized, it
never writes to stderr directly, either.  If it does either of these,
it's a bug in Unicorn and needs to be reported and fixed.

All writing through stderr happens through a Logger object which does
timestamping/formatting, but Rails may screw up the formatting:

>From the {FAQ}[http://unicorn.bogomips.org/FAQ.html]:
| === Why are log messages from Unicorn are unformatted when using Rails?
|
| Current versions of Rails unfortunately overrides the default Logger
| formatter.
|
| You can undo this behavior with the default logger in your Unicorn
| config file:
|
|   Configurator::DEFAULTS[:logger].formatter = Logger::Formatter.new
|
| Of course you can specify an entirely different logger as well
| with the "logger" directive described by Unicorn::Configurator.

It would be helpful for somebody who uses Rails to fix this behavior
in Rails.

[1] - stdout is reserved for the application; I configure
      {clogger}[http://clogger.rubyforge.org/] to log to stdout if I'm
      using clogger.

-- 
Eric Wong

From ghazel at gmail.com  Fri Jul  1 17:23:50 2011
From: ghazel at gmail.com (ghazel at gmail.com)
Date: Fri, 1 Jul 2011 14:23:50 -0700
Subject: Timestamp in unicorn logs
In-Reply-To: <20110701205434.GA19317@dcvr.yhbt.net>
References: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
	<20110701205434.GA19317@dcvr.yhbt.net>
Message-ID: <BANLkTi=2L3CAKLYAerk9+p7xXJB_ECwH9Q@mail.gmail.com>

On Fri, Jul 1, 2011 at 1:54 PM, Eric Wong <normalperson at yhbt.net> wrote:
> Alex Sharp <ajsharp at gmail.com> wrote:
>> I would love to see a timestamp in each line of unicorn stderr and
>> stdout logs. Has this been considered? Thanks.
>
> Unicorn itself never writes directly to stdout[1]. ?Once daemonized, it
> never writes to stderr directly, either. ?If it does either of these,
> it's a bug in Unicorn and needs to be reported and fixed.
>
> All writing through stderr happens through a Logger object which does
> timestamping/formatting, but Rails may screw up the formatting:

I use these options in my config/unicorn.rb:
stderr_path "/data/myapp/shared/log/unicorn.stderr.log"
stdout_path "/data/myapp/shared/log/unicorn.stdout.log"

So maybe that's what Alex is referring to as well. I do see
un-timestamped output in both files (some from my OobGC-fork
middleware). The logger configuration you mentioned is intended to be
used with those?

-Greg

From ajsharp at gmail.com  Fri Jul  1 17:40:58 2011
From: ajsharp at gmail.com (Alex Sharp)
Date: Fri, 1 Jul 2011 14:40:58 -0700
Subject: Timestamp in unicorn logs
In-Reply-To: <BANLkTi=2L3CAKLYAerk9+p7xXJB_ECwH9Q@mail.gmail.com>
References: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
	<20110701205434.GA19317@dcvr.yhbt.net>
	<BANLkTi=2L3CAKLYAerk9+p7xXJB_ECwH9Q@mail.gmail.com>
Message-ID: <BANLkTikP20qJAx2+wD_5bdkx8DDdaRG70A@mail.gmail.com>

On Fri, Jul 1, 2011 at 2:23 PM,  <ghazel at gmail.com> wrote:
> I use these options in my config/unicorn.rb:
> stderr_path "/data/myapp/shared/log/unicorn.stderr.log"
> stdout_path "/data/myapp/shared/log/unicorn.stdout.log"
>
> So maybe that's what Alex is referring to as well. I do see
> un-timestamped output in both files (some from my OobGC-fork
> middleware). The logger configuration you mentioned is intended to be
> used with those?
>

Yes, these are the logs I was referring to, not application level
logging. These logs output information when new workers are forked,
when the server starts, etc.

My apologies, I should have been more specific.

Best,
alex sharp
github.com/ajsharp
twitter.com/ajsharp
alexjsharp.com
615.243.1472

From normalperson at yhbt.net  Fri Jul  1 19:27:20 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Fri, 1 Jul 2011 16:27:20 -0700
Subject: Timestamp in unicorn logs
In-Reply-To: <BANLkTi=2L3CAKLYAerk9+p7xXJB_ECwH9Q@mail.gmail.com>
References: <BANLkTinmbjk2dnSsKS=oLFj_EVPE1tb-Vw@mail.gmail.com>
	<20110701205434.GA19317@dcvr.yhbt.net>
	<BANLkTi=2L3CAKLYAerk9+p7xXJB_ECwH9Q@mail.gmail.com>
Message-ID: <20110701232720.GA25165@dcvr.yhbt.net>

ghazel at gmail.com wrote:
> I use these options in my config/unicorn.rb:
> stderr_path "/data/myapp/shared/log/unicorn.stderr.log"
> stdout_path "/data/myapp/shared/log/unicorn.stdout.log"
> 
> So maybe that's what Alex is referring to as well. I do see
> un-timestamped output in both files (some from my OobGC-fork
> middleware). The logger configuration you mentioned is intended to be
> used with those?

Yes.  You should be able to access the same Logger instance via
env["rack.logger"] in your app/middleware (IIRC env["rack.logger"] is
required for Rack 1.2).

-- 
Eric Wong

From ehudros at gmail.com  Wed Jul  6 06:21:51 2011
From: ehudros at gmail.com (Ehud Rosenberg)
Date: Wed, 6 Jul 2011 13:21:51 +0300
Subject: Unicorn completely ignores USR2 signal
Message-ID: <CAEY6bkrA5-McJ2jJJof5EYuf3HoNzLXNC_2YJbDbV2hN1O4U2A@mail.gmail.com>

Hi all,
I'm experiencing a rather strange problem with unicorn on my production server.
Although the config file states preload_app true, sending USR2 to the
master process does not generate any response, and it seems like
unicorn is ignoring the signal altogether.
On another server sending USR2 changes the master process to and (old)
state and starts a new master process successfully.
The problematic server is using RVM & bundler, so I'm assuming it's
somehow related (the other one is vanilla ruby).
Sending signals other than USR2 (QUIT, HUP) works just fine.
Is there a way to trace what's going on behind the scenes here?
Unicorn's log file is completely empty.
Thanks :)

From normalperson at yhbt.net  Wed Jul  6 13:42:16 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Wed, 6 Jul 2011 17:42:16 +0000
Subject: Unicorn completely ignores USR2 signal
In-Reply-To: <CAEY6bkrA5-McJ2jJJof5EYuf3HoNzLXNC_2YJbDbV2hN1O4U2A@mail.gmail.com>
References: <CAEY6bkrA5-McJ2jJJof5EYuf3HoNzLXNC_2YJbDbV2hN1O4U2A@mail.gmail.com>
Message-ID: <20110706174216.GA1733@dcvr.yhbt.net>

Ehud Rosenberg <ehudros at gmail.com> wrote:
> Hi all,
> I'm experiencing a rather strange problem with unicorn on my production server.
> Although the config file states preload_app true, sending USR2 to the
> master process does not generate any response, and it seems like
> unicorn is ignoring the signal altogether.
> On another server sending USR2 changes the master process to and (old)
> state and starts a new master process successfully.
> The problematic server is using RVM & bundler, so I'm assuming it's
> somehow related (the other one is vanilla ruby).

RVM could be a problem, especially if your ENV changed somehow and your
path to.  Can you dump out the START_CTX and ENV contents in the
before_exec hook?

  before_exec do |server|
    File.open("/tmp/start_ctx.dump", "ab") do |fp|
      PP.pp Unicorn::HttpServer::START_CTX, fp
      PP.pp ENV, fp
    end
  end

You may need to modify START_CTX if you're changing paths or if
somehow RVM gave you the wrong path to unicorn

START_CTX is documented here:
  http://unicorn.bogomips.org/Unicorn/HttpServer.html

> Sending signals other than USR2 (QUIT, HUP) works just fine.
> Is there a way to trace what's going on behind the scenes here?

Run strace (Linux) or equivalent on the master process.

> Unicorn's log file is completely empty.

This is the log you setup to point to stderr_path?  That shouldn't
happen...

-- 
Eric Wong

From normalperson at yhbt.net  Thu Jul  7 10:18:28 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Thu, 7 Jul 2011 07:18:28 -0700
Subject: Unicorn completely ignores USR2 signal
In-Reply-To: <20110706174216.GA1733@dcvr.yhbt.net>
References: <CAEY6bkrA5-McJ2jJJof5EYuf3HoNzLXNC_2YJbDbV2hN1O4U2A@mail.gmail.com>
	<20110706174216.GA1733@dcvr.yhbt.net>
Message-ID: <20110707141828.GA8957@dcvr.yhbt.net>

Any progress on this issue?  I'll have limited network access
the next few days...

From ajsharp at gmail.com  Thu Jul  7 13:52:52 2011
From: ajsharp at gmail.com (Alex Sharp)
Date: Thu, 7 Jul 2011 19:52:52 +0200
Subject: Unicorn completely ignores USR2 signal
In-Reply-To: <20110707141828.GA8957@dcvr.yhbt.net>
References: <CAEY6bkrA5-McJ2jJJof5EYuf3HoNzLXNC_2YJbDbV2hN1O4U2A@mail.gmail.com>
	<20110706174216.GA1733@dcvr.yhbt.net>
	<20110707141828.GA8957@dcvr.yhbt.net>
Message-ID: <CAB3oGjqxQqN5q+HmfuFqmPqKxLmQ99yam_WDsTMT4QPSZME2XQ@mail.gmail.com>

Can you report the following? Ruby version (including the patch
number), OS and version? The linux kernel shipped with Ubuntu natty
11.04 has a known bug with signal trapping that affects ruby 1.9.2.
See here:

* https://github.com/bvandenbos/resque-scheduler/issues/90
* https://bugzilla.kernel.org/show_bug.cgi?id=32922

On Thu, Jul 7, 2011 at 4:18 PM, Eric Wong <normalperson at yhbt.net> wrote:
> Any progress on this issue? ?I'll have limited network access
> the next few days...
> _______________________________________________
> Unicorn mailing list - mongrel-unicorn at rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-unicorn
> Do not quote signatures (like this one) or top post when replying
>



-- 
Best,
alex sharp
github.com/ajsharp
twitter.com/ajsharp
alexjsharp.com
615.243.1472

From ehudros at gmail.com  Thu Jul  7 19:02:53 2011
From: ehudros at gmail.com (Ehud Rosenberg)
Date: Thu, 7 Jul 2011 23:02:53 +0000 (UTC)
Subject: Unicorn completely ignores USR2 signal
References: <CAEY6bkrA5-McJ2jJJof5EYuf3HoNzLXNC_2YJbDbV2hN1O4U2A@mail.gmail.com>
	<20110706174216.GA1733@dcvr.yhbt.net>
Message-ID: <loom.20110708T004238-674@post.gmane.org>

Eric Wong <normalperson <at> yhbt.net> writes:

> 
> Ehud Rosenberg <ehudros <at> gmail.com> wrote:
> > Hi all,
> > I'm experiencing a rather strange problem with unicorn on my production 
server.
> > Although the config file states preload_app true, sending USR2 to the
> > master process does not generate any response, and it seems like
> > unicorn is ignoring the signal altogether.
> > On another server sending USR2 changes the master process to and (old)
> > state and starts a new master process successfully.
> > The problematic server is using RVM & bundler, so I'm assuming it's
> > somehow related (the other one is vanilla ruby).
> 
> RVM could be a problem, especially if your ENV changed somehow and your
> path to.  Can you dump out the START_CTX and ENV contents in the
> before_exec hook?
> 
>   before_exec do |server|
>     File.open("/tmp/start_ctx.dump", "ab") do |fp|
>       PP.pp Unicorn::HttpServer::START_CTX, fp
>       PP.pp ENV, fp
>     end
>   end
> 
> You may need to modify START_CTX if you're changing paths or if
> somehow RVM gave you the wrong path to unicorn
> 
> START_CTX is documented here:
>   http://unicorn.bogomips.org/Unicorn/HttpServer.html
> 
> > Sending signals other than USR2 (QUIT, HUP) works just fine.
> > Is there a way to trace what's going on behind the scenes here?
> 
> Run strace (Linux) or equivalent on the master process.
> 
> > Unicorn's log file is completely empty.
> 
> This is the log you setup to point to stderr_path?  That shouldn't
> happen...
> 

Sorry for not getting back to you guys earlier. 
It seems like the entire setup is somehow broken, as the before_exec block does 
not seem to output anything to the logfiles/temp file (I know how weird that 
sounds). The stdout/stderr logs do not contain any info other than the regular 
"worker started" message.
I've tried 'puts' outside of the before_exec block and got the following output 
straight into my stdout (right after running sudo /etc/init.d/unicorn start):
{:argv=>["-D", "-E", "production", "-c", 
"/var/www/platform/current/config/unicorn.rb"], 0=>"/usr/local/rvm/gems/ruby-
1.9.2-head/bin/unicorn", :cwd=>"/var/www/platform/current"}

{"OLDPWD"=>"/var/www/platform/current", "SUDO_UID"=>"1000", "LOGNAME"=>"root", 
"USERNAME"=>"root", "PATH"=>"/usr/local/rvm/gems/ruby-1.9.2-
head/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6
/bin", "SHELL"=>"/bin/bash", "GEM_HOME"=>"/usr/local/rvm/gems/ruby-1.9.2-head",  
"PWD"=>"/var/www/platform/current", "RACK_ENV"=>"production", 
"BUNDLE_GEMFILE"=>"/var/www/platform/current/Gemfile", 
"BUNDLE_BIN_PATH"=>"/usr/local/rvm/gems/ruby-1.9.2-head/gems/bundler-
1.0.10/bin/bundle", "RUBYOPT"=>"-I/usr/local/rvm/gems/ruby-1.9.2-
head/gems/bundler-1.0.10/lib -rbundler/setup"}

The ENV output was truncated a little to remove irrelevant keys.

strace can be found here: 
https://gist.github.com/54cd784880b99a2b46d5/77718daec3c08227639a0619e02d387c4d0
cd9fd
I couldn't really figure out what's going on there - it complains the pid file 
can't be found although it's there, and it then writes its content to the oldbin 
file (which is never actually created in the pid directory). Permissions wise 
the directory is writable by pretty much anyone, and unicorn runs as root 
anyway.

The server is Ubuntu 10.04, ruby 1.9.2p53.
The server starts fine and the site is fully functional despite all the 
weirdness :)




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From marc at vailsys.com  Fri Jul  8 14:30:23 2011
From: marc at vailsys.com (Marc Sernatinger)
Date: Fri, 8 Jul 2011 13:30:23 -0500
Subject: SQL Server errors when using unicorn
Message-ID: <09EC48D7-7E0E-43E3-9B42-641E045CF7D8@vailsys.com>

Lately I have been seeing a large volume of database errors in a couple of applications at work.  This has proven difficult to troubleshoot: after some restarts of unicorn, things seem fine.   Then, a restart as part of a new deployment introduces these issues anew, with rollback to the previous version of the app still producing errors.  

One thing I have noticed is in my troubleshooting is that I seem to be able to reproduce these errors only after a period of idleness or low activity on the part of unicorn.  Running unicorn on my workstation, running ab with a concurrency of 5 or so is enough to produce the issue reasonably often.  

I bring this question to the unicorn discussion because I noticed we don't have this problem using Passenger.  I was wondering if there were any particulars of our setup that seem problematic. 

Here is an example of the error we see.  It is not always exactly this error.  Sometimes we will see a bad token error from SQL Server.  Other times the error manifests itself in ActiveRecord dynamic methods not being properly created:

[ WARN 11-07-08 11:42:29 25300:0x1001d6360 ] Internal Server Error ODBC::Error: 01000 (20017) [unixODBC][FreeTDS][SQL Server]Unexpected EOF from the server:  SELECT columns.TABLE_NAME as table_name, columns.COLUMN_NAME as name, columns.DATA_TYPE as type, columns.COLUMN_DEFAULT as default_value, columns.NUMERIC_SCALE as numeric_scale, columns.NUMERIC_PRECISION as numeric_precision, CASE WHEN columns.DATA_TYPE IN ('nchar','nvarchar') THEN columns.CHARACTER_MAXIMUM_LENGTH ELSE COL_LENGTH(columns.TABLE_SCHEMA+'.'+columns.TABLE_NAME, columns.COLUMN_NAME) END as length, CASE WHEN columns.IS_NULLABLE = 'YES' THEN 1 ELSE NULL END as is_nullable, CASE WHEN COLUMNPROPERTY(OBJECT_ID(columns.TABLE_SCHEMA+'.'+columns.TABLE_NAME), columns.COLUMN_NAME, 'IsIdentity') = 0 THEN NULL ELSE 1 END as is_identity FROM INFORMATION_SCHEMA.COLUMNS columns WHERE columns.TABLE_NAME = 'users' AND columns.TABLE_SCHEMA = schema_name() ORDER BY columns.ordinal_position 


Our stack:
Rails 3.0.7 
activerecord-sqlserver-adapter 3.0.15 using ruby-odbc and FreeTDS 0.82 
unicorn 3.5.0 with nginx in front 
SQL Server 2005 -- at a different site from our web servers, connected by WAN
CentOS 5.9

I appreciate any suggestions as to where the problem may lie. 

Thanks


From marc at vailsys.com  Fri Jul  8 19:29:44 2011
From: marc at vailsys.com (Marc Sernatinger)
Date: Fri, 8 Jul 2011 18:29:44 -0500
Subject: "NoMethodError: undefined method" after switching to unicorn
Message-ID: <997EE861-8141-49D6-AE73-D834A7D00CCF@vailsys.com>

Tiago Scolari <tscolari <at> gmail.com> writes:

> 
> Hello,
> I'm having a lot of "NoMethodError: undefined method" errors after I moved from thin to unicorn.
> 
> This seems to happen only with active records, and dynamic methods, like:
> find_by_*, scoped_by_*, ...
> 
> It seems to be random, at least I haven't found relation yet.
> I may reload the same page 10 times, sometimes it will work ok, some times it will give me this error.
> 
> I've 2 sites having this issue, one uses rails 3.0.9 (r 1.9.2) and other with 2.3.8 (r 1.8.7).
> As i said, the issue started after I switched to unicorn.
> 
> Any idea what could cause this?
> 
> Here are some backtraces from hoptoad:

This is one of the errors we see as part of our issues with our database connection when using unicorn.  Do you have any information about your stack to share? 

Thanks,
Marc

From normalperson at yhbt.net  Mon Jul 11 04:11:30 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Mon, 11 Jul 2011 08:11:30 +0000
Subject: SQL Server errors when using unicorn
In-Reply-To: <09EC48D7-7E0E-43E3-9B42-641E045CF7D8@vailsys.com>
References: <09EC48D7-7E0E-43E3-9B42-641E045CF7D8@vailsys.com>
Message-ID: <20110711081130.GA5176@dcvr.yhbt.net>

Marc Sernatinger <marc at vailsys.com> wrote:
> I bring this question to the unicorn discussion because I noticed we
> don't have this problem using Passenger.  I was wondering if there
> were any particulars of our setup that seem problematic. 

Do you have "preload_app" set to true?  Try using the default (false)
since it's likely to cause issues for some/most database drivers or
anything else that opens a stream socket.

You can't safely share stream sockets across multiple processes/threads
so you have to disconnect/reconnect them in the before/after_fork hooks.

> Our stack: Rails 3.0.7 activerecord-sqlserver-adapter 3.0.15 using
> ruby-odbc and FreeTDS 0.82 unicorn 3.5.0 with nginx in front SQL
> Server 2005 -- at a different site from our web servers, connected by
> WAN CentOS 5.9

Maybe somebody else can help you if disabling preload_app doesn't help.
I have no idea about any of the database components you use.

-- 
Eric Wong

From normalperson at yhbt.net  Mon Jul 11 04:23:12 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Mon, 11 Jul 2011 08:23:12 +0000
Subject: "NoMethodError: undefined method" after switching to unicorn
In-Reply-To: <997EE861-8141-49D6-AE73-D834A7D00CCF@vailsys.com>
References: <997EE861-8141-49D6-AE73-D834A7D00CCF@vailsys.com>
Message-ID: <20110711082312.GB5176@dcvr.yhbt.net>

Marc Sernatinger <marc at vailsys.com> wrote:
> Tiago Scolari <tscolari <at> gmail.com> writes:
> > Here are some backtraces from hoptoad:
> 
> This is one of the errors we see as part of our issues with our
> database connection when using unicorn.  Do you have any information
> about your stack to share? 

He was using preload_app, but seems to have fixed it by reverting to
an older Unicorn (3.7.0, he was on 4.0.0, so you seem to be hitting a
a different problem).

ref: http://mid.gmane.org/20110630194515.GA29105 at dcvr.yhbt.net

-- 
Eric Wong

From matthewcalebsmith at gmail.com  Mon Jul 11 12:07:59 2011
From: matthewcalebsmith at gmail.com (Matt Smith)
Date: Mon, 11 Jul 2011 09:07:59 -0700
Subject: Unicorn vs Apache
Message-ID: <1310400479.3665.44.camel@antium>

Hello all,

I have always deploys rails apps with unicorn and nginx as a reverse
proxy in the past. However, I am working with a new firm and they would
like to use Apache with mod_pagespeed in front of unicorn.

We will be deploying a rails 3.1 app with streaming. To me,
mod_pagespeed does not seem like a magic bullet, as it appears to be a
collection of best practices which have to be rewritten as a page is
being served. Why not code with the best practices in mind as to not
have to scan and yet again reprocess the content?

Searching on the web, I find few entries about mod_page speed and rails,
and relatively few entries about apache with unicorn.

To me it seems that using best practices, with appropriate use of
caching, and nginx would be a better solution than apache with
mod_pagespeed.

Questions:

1) Does nginx provide any necessary services to unicorn, that apache
cannot provide?

2) If apache can provide all necessary services, does it do them as well
as nginx.

3) We would like the fastest user experience possible. Does apache with
mod_pagespeed hold any weight here over nginx?

4) Part of a fast user experience is how fast you get the page, correct?
Seems like nginx has the upper hand here, due to nginx's nio vs apache's
threading.

5) Would it make since to put nginx in front of apache w/mod_pagespeed
(or visa versa), to use the applicable mod_pagespeed filters? Or is this
a bad idea to begin with?

6) Is there anything else I am missing? Are there any specific resources
I need to look at?

7) Should we go with nginx or apache? (Opinions ok.)

Much thanks,

Matt Smith




From steve at steveklabnik.com  Mon Jul 11 12:50:41 2011
From: steve at steveklabnik.com (Steve Klabnik)
Date: Mon, 11 Jul 2011 12:50:41 -0400
Subject: Unicorn vs Apache
In-Reply-To: <1310400479.3665.44.camel@antium>
References: <1310400479.3665.44.camel@antium>
Message-ID: <CABL+ZB67GTeO3FnTL_e7Ppr5G5Ps=FKYUBMNT6Nw94fYr7DKSQ@mail.gmail.com>

I only have a barely informed opinion here, but I will say two things:

1) You do know that 3.1 streaming is still very much experimental, right?

2) Introducing an additional layer in front of the application by
putting nginx in front of apache doesn't seem to be a good idea to me,
though I have done it in the past. Performance was the _last_
consideration with that application.

3) We can talk in theory all we want, but we don't have your
application. Try it, and profile. Then you'll have a real answer, not
some crap that we all make up. Especially with something like
webserver setup, you should be able to just try all these combinations
in a day or two, and see what works for your app.

There is no silver bullet.

-Steve

From normalperson at yhbt.net  Mon Jul 11 14:45:56 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Mon, 11 Jul 2011 11:45:56 -0700
Subject: Unicorn vs Apache
In-Reply-To: <1310400479.3665.44.camel@antium>
References: <1310400479.3665.44.camel@antium>
Message-ID: <20110711184556.GA2024@dcvr.yhbt.net>

Matt Smith <matthewcalebsmith at gmail.com> wrote:
> Hello all,
> 
> I have always deploys rails apps with unicorn and nginx as a reverse
> proxy in the past. However, I am working with a new firm and they would
> like to use Apache with mod_pagespeed in front of unicorn.
> 
> We will be deploying a rails 3.1 app with streaming. To me,
> mod_pagespeed does not seem like a magic bullet, as it appears to be a
> collection of best practices which have to be rewritten as a page is
> being served.

note: mod_pagespeed is totally independent if Rails 3.1 streaming.

Keep in mind the most important feature of nginx Unicorn relies on (full
request/response buffering) also defeats Rails 3.1 streaming because of
how it's currently implemented.

> Why not code with the best practices in mind as to not
> have to scan and yet again reprocess the content?

My thoughts exactly :)  But implementing those best practices
isn't cheap, either.  If you have to run mod_pagespeed, the safest
configuration would be:

  nginx <-> mod_pagespeed <-> unicorn

Of course that would introduce latency.  Maybe there's Rack middleware
that works like mod_pagespeed...

> Searching on the web, I find few entries about mod_page speed and rails,
> and relatively few entries about apache with unicorn.

Apache + Unicorn is still unsupported since (as far as anybody knows),
it doesn't fully buffer responses and requests to completely isolate
Unicorn from the harmful effects of slow clients.

> To me it seems that using best practices, with appropriate use of
> caching, and nginx would be a better solution than apache with
> mod_pagespeed.

I agree.

> Questions:
> 
> 1) Does nginx provide any necessary services to unicorn, that apache
> cannot provide?

nginx provides full request + response buffering (all uploads, and large
response bodies that can't fit into socket buffers).  nginx also
provides inexpensive handling of idle keepalive connections; so you
can have a lot of idle connections for little memory usage.

Apache 2.x mpm_event /should/ be as good *if* (and only if) it an
provide the full request/response buffering; but I don't have any
experience with it.  mpm_worker can be fairly efficient with Linux+NPTL
if you can use smaller pthreads stack sizes (and are using 64-bit).

> 2) If apache can provide all necessary services, does it do them as well
> as nginx.

Buffering + keepalive maintenance is the most important thing I care
about, and as far as I know, Apache doesn't do that as well as nginx.

> 3) We would like the fastest user experience possible. Does apache with
> mod_pagespeed hold any weight here over nginx?

The full request/response buffering of nginx also hurts latency a
little, so the user experience is slightly worse under low load.
However, nginx does the best job of keeping things going under high
load.

> 4) Part of a fast user experience is how fast you get the page, correct?
> Seems like nginx has the upper hand here, due to nginx's nio vs apache's
> threading.

Not sure what "nio" means... non-blocking I/O?  Apache can use mpm_event
which is like the non-blocking + event loop nginx uses, but AFAIK the
buffering of requests responses is not like what nginx implements.

> 5) Would it make since to put nginx in front of apache w/mod_pagespeed
> (or visa versa), to use the applicable mod_pagespeed filters? Or is this
> a bad idea to begin with?

nginx <-> mod_pagespeed <-> unicorn should be alright, but of course not
ideal because of the extra copying + latency involved.

For non-Ruby/Rack apps, I've always recommended nginx sit in front of
any Apache 1.3 or 2.x+mpm_prefork apps that are exposed to slow clients,
too.

> 6) Is there anything else I am missing? Are there any specific resources
> I need to look at?

If you're willing to take a risk with Rainbows!, I posted some notes
about making it work with Rails 3.1 streaming here:

http://thread.gmane.org/gmane.comp.lang.ruby.rainbows.general/229

Keep in mind nobody I know of uses Rainbows! in production; but
it /should/ be able to work without nginx (or any proxy).

> 7) Should we go with nginx or apache? (Opinions ok.)

nginx remains the only supported reverse proxy for Unicorn at this
moment.

-- 
Eric Wong

From normalperson at yhbt.net  Mon Jul 11 14:50:26 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Mon, 11 Jul 2011 11:50:26 -0700
Subject: Unicorn vs Apache
In-Reply-To: <CABL+ZB67GTeO3FnTL_e7Ppr5G5Ps=FKYUBMNT6Nw94fYr7DKSQ@mail.gmail.com>
References: <1310400479.3665.44.camel@antium>
	<CABL+ZB67GTeO3FnTL_e7Ppr5G5Ps=FKYUBMNT6Nw94fYr7DKSQ@mail.gmail.com>
Message-ID: <20110711185026.GB2024@dcvr.yhbt.net>

Steve Klabnik <steve at steveklabnik.com> wrote:
> 3) We can talk in theory all we want, but we don't have your
> application. Try it, and profile. Then you'll have a real answer, not
> some crap that we all make up. Especially with something like
> webserver setup, you should be able to just try all these combinations
> in a day or two, and see what works for your app.

Be careful about relying on profiling/benchmarking tools, most of them
don't replicate network latency and simulate slow/idle/keepalive clients
at all.

I wrote david many years ago to simulate slow client behavior
and to convince Apache mpm_prefork + (mod_php|mod_perl) users to
put nginx in front of their apps regardless of what benchmarks
were saying: http://bogomips.org/david.git

-- 
Eric Wong

From steve at steveklabnik.com  Mon Jul 11 14:57:27 2011
From: steve at steveklabnik.com (Steve Klabnik)
Date: Mon, 11 Jul 2011 14:57:27 -0400
Subject: Unicorn vs Apache
In-Reply-To: <20110711184556.GA2024@dcvr.yhbt.net>
References: <1310400479.3665.44.camel@antium>
	<20110711184556.GA2024@dcvr.yhbt.net>
Message-ID: <CABL+ZB6qPP2ZfQkn-xyuho+dBF=bZbhK87uJZQXqzMpox65r+A@mail.gmail.com>

> Of course that would introduce latency. ?Maybe there's Rack middleware
> that works like mod_pagespeed...


I knew I remembered something like this:
http://rack-pagespeed.heroku.com/ I think that's what this is...

From steve at steveklabnik.com  Mon Jul 11 15:22:40 2011
From: steve at steveklabnik.com (Steve Klabnik)
Date: Mon, 11 Jul 2011 15:22:40 -0400
Subject: Unicorn vs Apache
In-Reply-To: <20110711185026.GB2024@dcvr.yhbt.net>
References: <1310400479.3665.44.camel@antium>
	<CABL+ZB67GTeO3FnTL_e7Ppr5G5Ps=FKYUBMNT6Nw94fYr7DKSQ@mail.gmail.com>
	<20110711185026.GB2024@dcvr.yhbt.net>
Message-ID: <CABL+ZB5xDVJFxRDU4RSEciYMWnA9wmxnAEaBEt3m_39c2LC9KQ@mail.gmail.com>

Quite fair. Like I said, barely informed opinion here. :)

From matthewcalebsmith at gmail.com  Mon Jul 11 17:43:12 2011
From: matthewcalebsmith at gmail.com (Matt Smith)
Date: Mon, 11 Jul 2011 14:43:12 -0700
Subject: Unicorn vs Apache
Message-ID: <1310420592.3665.81.camel@antium>

Thanks Eric and Steve,

I really appreciate the input and time. And thanks for reading through
my typos... You understood exactly what I meant to say.

I have read about Rainbows! before. I will have to give it a shot on
some upcomming projects, as I really enjoy using Unicorn.

Thanks for pointing out rack-pagespeed.

Much thanks,

Matt Smith




From normalperson at yhbt.net  Tue Jul 12 21:28:36 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Wed, 13 Jul 2011 01:28:36 +0000
Subject: [PATCH] http: reject non-LWS CTL chars (0..31 + 127) in field values
Message-ID: <20110713012836.GA29441@dcvr.yhbt.net>

Would anybody be negatively affected by this change?  I've been seeing
\x00 bytes in HTTP headers from clients and would rather stop those
clients earlier rather than later.

>From 4a8ddcd017a75b9bc99190dc565880615709d810 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson at yhbt.net>
Date: Tue, 12 Jul 2011 23:52:33 +0000
Subject: [PATCH] http: reject non-LWS CTL chars (0..31 + 127) in field values

RFC 2616 doesn't appear to allow most CTL bytes even though
Mongrel always did.  Rack::Lint disallows 0..31, too, though we
allow "\t" (HT, 09) since it's LWS and allowed by RFC 2616.
---
 ext/unicorn_http/unicorn_http_common.rl |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/ext/unicorn_http/unicorn_http_common.rl b/ext/unicorn_http/unicorn_http_common.rl
index cf93fec..cc1d455 100644
--- a/ext/unicorn_http/unicorn_http_common.rl
+++ b/ext/unicorn_http/unicorn_http_common.rl
@@ -20,6 +20,7 @@
   pchar = (uchar | ":" | "@" | "&" | "=" | "+");
   tspecials = ("(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\\" | "\"" | "/" | "[" | "]" | "?" | "=" | "{" | "}" | " " | "\t");
   lws = (" " | "\t");
+  content = ((any -- CTL) | lws);
 
 # elements
   token = (ascii -- (CTL | tspecials));
@@ -50,9 +51,9 @@
 
   field_name = ( token -- ":" )+ >start_field $snake_upcase_field %write_field;
 
-  field_value = any* >start_value %write_value;
+  field_value = content* >start_value %write_value;
 
-  value_cont = lws+ any* >start_value %write_cont_value;
+  value_cont = lws+ content* >start_value %write_cont_value;
 
   message_header = ((field_name ":" lws* field_value)|value_cont) :> CRLF;
   chunk_ext_val = token*;
-- 
Eric Wong

From normalperson at yhbt.net  Wed Jul 13 19:52:52 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Wed, 13 Jul 2011 23:52:52 +0000
Subject: [PATCH] http: reject non-LWS CTL chars (0..31 + 127) in field
	values
In-Reply-To: <20110713012836.GA29441@dcvr.yhbt.net>
References: <20110713012836.GA29441@dcvr.yhbt.net>
Message-ID: <20110713235252.GA4615@dcvr.yhbt.net>

Eric Wong <normalperson at yhbt.net> wrote:
> Would anybody be negatively affected by this change?  I've been seeing
> \x00 bytes in HTTP headers from clients and would rather stop those
> clients earlier rather than later.

Pushed out with tests to git://bogomips.org/unicorn.git

From pin1960 at att.net  Sat Jul 16 05:53:25 2011
From: pin1960 at att.net (Joseph Osei)
Date: Sat, 16 Jul 2011 02:53:25 -0700
Subject: HELLO URGENT
Message-ID: <ZIONHPc076643e35b64532a71e8f64ced30687@ZionHP>

Greetings,
I have interest of investing in your country as well as seek your services in a private and confidential matter. I am a senior Auditor heading computing department here in our bank.
On my routine inspection I discovered a dormant domiciliary account with a Balance of ($159. Million USD}.I write to seek your indulgence and assistance in transferring this fund to your country through legal means.
I am proposing to make this transfer to a designated bank account of your choice in your country for investment.
At the conclusion of this transaction, you will be given 30% of the total amount, 70% will be for me and my Bank colleagues who will help make this business a success.
 
Let me know if you can handle it.
When I hear from you, we then commence all arrangements and I will give you more details on how we should handle this project. Please treat this business with utmost confidentiality and send me the following as asap:
 
(1) Full names:
(2) Private phone number:
(3) Current residential address:
(4) Occupation with company name if available:
(5) Age and Sex:
 
Regards,
Joseph Osei 


From pin1960 at att.net  Sun Jul 17 09:52:32 2011
From: pin1960 at att.net (Joseph Osei)
Date: Sun, 17 Jul 2011 06:52:32 -0700
Subject: HELLO URGENT
Message-ID: <ZIONHP7db632cf7d9a4484adb0617462115588@ZionHP>

Greetings,
I have interest of investing in your country as well as seek your services in a private and confidential matter. I am a senior Auditor heading computing department here in our bank.
On my routine inspection I discovered a dormant domiciliary account with a Balance of ($159. Million USD}.I write to seek your indulgence and assistance in transferring this fund to your country through legal means.
I am proposing to make this transfer to a designated bank account of your choice in your country for investment.
At the conclusion of this transaction, you will be given 30% of the total amount, 70% will be for me and my Bank colleagues who will help make this business a success.
 
Let me know if you can handle it.
When I hear from you, we then commence all arrangements and I will give you more details on how we should handle this project. Please treat this business with utmost confidentiality and send me the following as asap:
 
(1) Full names:
(2) Private phone number:
(3) Current residential address:
(4) Occupation with company name if available:
(5) Age and Sex:
 
Regards,
Joseph Osei 


From pin1960 at att.net  Sun Jul 17 22:26:22 2011
From: pin1960 at att.net (Joseph Osei)
Date: Sun, 17 Jul 2011 19:26:22 -0700
Subject: HELLO URGENT
Message-ID: <ZIONHP4269edd47d6f4bfa84cd4e2096fdc8cc@ZionHP>

Greetings,
I have interest of investing in your country as well as seek your services in a private and confidential matter. I am a senior Auditor heading computing department here in our bank.
On my routine inspection I discovered a dormant domiciliary account with a Balance of ($159. Million USD}.I write to seek your indulgence and assistance in transferring this fund to your country through legal means.
I am proposing to make this transfer to a designated bank account of your choice in your country for investment.
At the conclusion of this transaction, you will be given 30% of the total amount, 70% will be for me and my Bank colleagues who will help make this business a success.
 
Let me know if you can handle it.
When I hear from you, we then commence all arrangements and I will give you more details on how we should handle this project. Please treat this business with utmost confidentiality and send me the following as asap:
 
(1) Full names:
(2) Private phone number:
(3) Current residential address:
(4) Occupation with company name if available:
(5) Age and Sex:
 
Regards,
Joseph Osei 


From pin1960 at att.net  Mon Jul 18 04:34:30 2011
From: pin1960 at att.net (Joseph Osei)
Date: Mon, 18 Jul 2011 01:34:30 -0700
Subject: HELLO URGENT
Message-ID: <ZIONHP24f97fa41c284855a3876d418b141ab6@ZionHP>

Greetings,
I have interest of investing in your country as well as seek your services in a private and confidential matter. I am a senior Auditor heading computing department here in our bank.
On my routine inspection I discovered a dormant domiciliary account with a Balance of ($159. Million USD}.I write to seek your indulgence and assistance in transferring this fund to your country through legal means.
I am proposing to make this transfer to a designated bank account of your choice in your country for investment.
At the conclusion of this transaction, you will be given 30% of the total amount, 70% will be for me and my Bank colleagues who will help make this business a success.
 
Let me know if you can handle it.
When I hear from you, we then commence all arrangements and I will give you more details on how we should handle this project. Please treat this business with utmost confidentiality and send me the following as asap:
 
(1) Full names:
(2) Private phone number:
(3) Current residential address:
(4) Occupation with company name if available:
(5) Age and Sex:
 
Regards,
Joseph Osei 


From douglasmoura27 at gmail.com  Mon Jul 18 09:34:57 2011
From: douglasmoura27 at gmail.com (Douglas =?utf-8?b?QW5kcsOp?=)
Date: Mon, 18 Jul 2011 13:34:57 +0000 (UTC)
Subject: Undefined method after switching to unicorn
References: <9E260BC166D04FF1B0B7CBC563B221BA@gmail.com>
	<4AABABCB7BED4EAC9D72BFFCEF981CEC@gmail.com>
	<20110630050420.GA19876@dcvr.yhbt.net>
	<20110630194515.GA29105@dcvr.yhbt.net>
Message-ID: <loom.20110718T152849-99@post.gmane.org>

Hello, I'm having the same issue with Unicorn 3.7.0 and rails 3.0.9. 
I don't have any idea what could cause this problem. Please help me!!


From normalperson at yhbt.net  Mon Jul 18 15:42:07 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Mon, 18 Jul 2011 12:42:07 -0700
Subject: Undefined method after switching to unicorn
In-Reply-To: <loom.20110718T152849-99@post.gmane.org>
References: <9E260BC166D04FF1B0B7CBC563B221BA@gmail.com>
	<4AABABCB7BED4EAC9D72BFFCEF981CEC@gmail.com>
	<20110630050420.GA19876@dcvr.yhbt.net>
	<20110630194515.GA29105@dcvr.yhbt.net>
	<loom.20110718T152849-99@post.gmane.org>
Message-ID: <20110718194207.GA27898@dcvr.yhbt.net>

Douglas Andr? <douglasmoura27 at gmail.com> wrote:
> Hello, I'm having the same issue with Unicorn 3.7.0 and rails 3.0.9. 
> I don't have any idea what could cause this problem. Please help me!!

Did you try disabling preload_app?  If that doesn't help, help us
help you by telling us everything you can about your setup,
including (and not limited to):

* Anything that maintains network connections/open files
* All gems and versions you use, including the versions of 3rd party
  libraries (e.g. OpenSSL version)
* OS version
* Ruby version
* CPU architecture

-- 
Eric Wong

From desantis.maurizio at gmail.com  Sat Jul 23 16:18:29 2011
From: desantis.maurizio at gmail.com (Maurizio De Santis)
Date: Sat, 23 Jul 2011 22:18:29 +0200
Subject: Problems running unicorn_rails without bundle exec (in a RVM context)
Message-ID: <CA+_M_Jer6MNyc9MSAe6SQqaoJVB+RFXogOwyeWX8dmutq8t-Eg@mail.gmail.com>

Hello,

I cannot run unicorn_rails out without using bundle exec . This is the error:

/home/user/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/runtime.rb:31:in
`block in setup': You have already activated rack 1.3.1, but your
Gemfile requires rack 1.2.3. Consider using bundle exec.
(Gem::LoadError)

Maybe RVM is involved? Maybe I am involved?

Please add me in the CC replies, I am not subscribed to the newsletter.

Cheers

--

Maurizio De Santis

From normalperson at yhbt.net  Sat Jul 23 16:57:57 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Sat, 23 Jul 2011 13:57:57 -0700
Subject: Problems running unicorn_rails without bundle exec (in a RVM
	context)
In-Reply-To: <CA+_M_Jer6MNyc9MSAe6SQqaoJVB+RFXogOwyeWX8dmutq8t-Eg@mail.gmail.com>
References: <CA+_M_Jer6MNyc9MSAe6SQqaoJVB+RFXogOwyeWX8dmutq8t-Eg@mail.gmail.com>
Message-ID: <20110723205757.GA22777@dcvr.yhbt.net>

Maurizio De Santis <desantis.maurizio at gmail.com> wrote:
> Hello,
> 
> I cannot run unicorn_rails out without using bundle exec . This is the error:
> 
> /home/user/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.15/lib/bundler/runtime.rb:31:in
> `block in setup': You have already activated rack 1.3.1, but your
> Gemfile requires rack 1.2.3. Consider using bundle exec.
> (Gem::LoadError)
> 
> Maybe RVM is involved? Maybe I am involved?

You should use bundle exec if your app is using bundler.  Otherwise you
can try uninstall the conflicting version of rack from your system/RVM
installation, but that defeats the purpose of bundler...

> Please add me in the CC replies, I am not subscribed to the newsletter.

Thanks for making a note of this :>

-- 
Eric Wong

From desantis.maurizio at gmail.com  Sat Jul 23 19:03:42 2011
From: desantis.maurizio at gmail.com (Maurizio De Santis)
Date: Sun, 24 Jul 2011 01:03:42 +0200
Subject: Problems running unicorn_rails without bundle exec (in a RVM
	context)
In-Reply-To: <20110723205757.GA22777@dcvr.yhbt.net>
References: <CA+_M_Jer6MNyc9MSAe6SQqaoJVB+RFXogOwyeWX8dmutq8t-Eg@mail.gmail.com>
	<20110723205757.GA22777@dcvr.yhbt.net>
Message-ID: <CA+_M_Jd8-n7fMyeWHsb2QWx0PfM3=9NQjQ-b6rcQMiyPFt6Gkw@mail.gmail.com>

> You should use bundle exec if your app is using bundler. ?Otherwise you
> can try uninstall the conflicting version of rack from your system/RVM
> installation, but that defeats the purpose of bundler...

uhm, this will make my life more difficoult because I'm trying to
write an upstart srcript for unicorn_rails, and so I have to consider
this too... more work for me :)

>> Please add me in the CC replies, I am not subscribed to the newsletter.
>
> Thanks for making a note of this :>
>

I read the ISSUES page carefully before to write :)

Thank you!

-- 

Maurizio De Santis

From swindsor at gmail.com  Sat Jul 23 20:48:12 2011
From: swindsor at gmail.com (Scott Windsor)
Date: Sat, 23 Jul 2011 17:48:12 -0700
Subject: Problems running unicorn_rails without bundle exec (in a RVM
	context)
In-Reply-To: <CA+_M_Jd8-n7fMyeWHsb2QWx0PfM3=9NQjQ-b6rcQMiyPFt6Gkw@mail.gmail.com>
References: <CA+_M_Jer6MNyc9MSAe6SQqaoJVB+RFXogOwyeWX8dmutq8t-Eg@mail.gmail.com>
	<20110723205757.GA22777@dcvr.yhbt.net>
	<CA+_M_Jd8-n7fMyeWHsb2QWx0PfM3=9NQjQ-b6rcQMiyPFt6Gkw@mail.gmail.com>
Message-ID: <CAHLXs13-20-h89gLeAeHU2DBanSHEmJ=ROa_34VNd_wkOK5QJg@mail.gmail.com>

On Sat, Jul 23, 2011 at 4:03 PM, Maurizio De Santis
<desantis.maurizio at gmail.com> wrote:
>> You should use bundle exec if your app is using bundler. ?Otherwise you
>> can try uninstall the conflicting version of rack from your system/RVM
>> installation, but that defeats the purpose of bundler...
>
> uhm, this will make my life more difficoult because I'm trying to
> write an upstart srcript for unicorn_rails, and so I have to consider
> this too... more work for me :)
>

Have you looked at foreman?
http://blog.daviddollar.org/2011/05/06/introducing-foreman.html

It's a pretty good approach to process management and can export the
upstart scripts for you...

- scott

From jesse at jc00ke.com  Mon Jul 25 16:21:31 2011
From: jesse at jc00ke.com (Jesse Cooke)
Date: Mon, 25 Jul 2011 13:21:31 -0700
Subject: SIGTERM not actually killing processes
Message-ID: <CAFgS5CznD71gb4RZiVB9DSGZfXJ4YOVf04DQc=Gp2MMpP-ChNg@mail.gmail.com>

Hi,
Unicorn is saying it's terminating but it's not actually. Check out
the gist:?https://gist.github.com/1104930

Using:
- Ruby 1.9.2p180
- unicorn 4.0.1
- kgio 2.6.0
- bundler 1.0.15
- Linux maynard 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17
UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

Please let me know if there's any other info I can provide.
Thanks,
Jesse
--------------------------------------------
Jesse Cooke ::?N-tier Engineer
jc00ke.com?/ @jc00ke

From normalperson at yhbt.net  Mon Jul 25 17:22:15 2011
From: normalperson at yhbt.net (Eric Wong)
Date: Mon, 25 Jul 2011 14:22:15 -0700
Subject: SIGTERM not actually killing processes
In-Reply-To: <CAFgS5CznD71gb4RZiVB9DSGZfXJ4YOVf04DQc=Gp2MMpP-ChNg@mail.gmail.com>
References: <CAFgS5CznD71gb4RZiVB9DSGZfXJ4YOVf04DQc=Gp2MMpP-ChNg@mail.gmail.com>
Message-ID: <20110725212215.GA17101@dcvr.yhbt.net>

Jesse Cooke <jesse at jc00ke.com> wrote:
> Hi,
> Unicorn is saying it's terminating but it's not actually. Check out
> the gist:?https://gist.github.com/1104930
> 
> Using:
> - Ruby 1.9.2p180
> - unicorn 4.0.1
> - kgio 2.6.0
> - bundler 1.0.15
> - Linux maynard 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17
> UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
> 
> Please let me know if there's any other info I can provide.

Since it's a 2.6.38 kernel, I it could be this bug:
  https://bugzilla.kernel.org/show_bug.cgi?id=32922

Linux 2.6.38.4 should have the fix, but I'm not sure if Ubuntu
backported that fix to its 2.6.38-10 package.

Rubyists have seen this issue a few times already:
  http://redmine.ruby-lang.org/issues/4777
  http://redmine.ruby-lang.org/issues/4939


Also, can you try sending signals directly to Unicorn without foreman?
I'm not familiar with foreman at all, maybe somebody else on this list
is...

-- 
Eric Wong

From jesse at jc00ke.com  Mon Jul 25 19:20:53 2011
From: jesse at jc00ke.com (Jesse Cooke)
Date: Mon, 25 Jul 2011 16:20:53 -0700
Subject: SIGTERM not actually killing processes
In-Reply-To: <CAFgS5CxwCmHL65W39R2W73YfUK34WX50DS_JJF4L-d_tQuH86Q@mail.gmail.com>
References: <CAFgS5CznD71gb4RZiVB9DSGZfXJ4YOVf04DQc=Gp2MMpP-ChNg@mail.gmail.com>
	<20110725212215.GA17101@dcvr.yhbt.net>
	<DA420539FB904E888DB3B397DC431B7C@gmail.com>
	<CAFgS5CxwCmHL65W39R2W73YfUK34WX50DS_JJF4L-d_tQuH86Q@mail.gmail.com>
Message-ID: <CAFgS5CxGTZ82JX9DriXvv86J8kJeOjs+0=zErqX8O_QK88LgtA@mail.gmail.com>

Sending TERM directly to the master process killed it.

--------------------------------------------
Jesse Cooke ::?N-tier Engineer
jc00ke.com?/ @jc00ke


On Mon, Jul 25, 2011 at 3:30 PM, Jesse Cooke <jesse at jc00ke.com> wrote:
>
> Sending TERM directly to the master process killed it.
>
> --------------------------------------------
> Jesse Cooke ::?N-tier Engineer
> jc00ke.com?/ @jc00ke
>
>
> On Mon, Jul 25, 2011 at 2:32 PM, Alex Sharp <ajsharp at gmail.com> wrote:
>>
>> On Monday, July 25, 2011 at 2:22 PM, Eric Wong wrote:
>>
>> Jesse Cooke <jesse at jc00ke.com> wrote:
>>
>> Hi,
>> Unicorn is saying it's terminating but it's not actually. Check out
>> the gist:?https://gist.github.com/1104930
>>
>> Using:
>> - Ruby 1.9.2p180
>> - unicorn 4.0.1
>> - kgio 2.6.0
>> - bundler 1.0.15
>> - Linux maynard 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17
>> UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
>>
>> Please let me know if there's any other info I can provide.
>>
>> Since it's a 2.6.38 kernel, I it could be this bug:
>> https://bugzilla.kernel.org/show_bug.cgi?id=32922
>>
>> Linux 2.6.38.4 should have the fix, but I'm not sure if Ubuntu
>> backported that fix to its 2.6.38-10 package.
>>
>> Rubyists have seen this issue a few times already:
>> http://redmine.ruby-lang.org/issues/4777
>> http://redmine.ruby-lang.org/issues/4939
>>
>>
>> Also, can you try sending signals directly to Unicorn without foreman?
>> I'm not familiar with foreman at all, maybe somebody else on this list
>> is...
>>
>> Not familiar with foreman, but I've verified the issues you've linked to with another non-unicorn problem (god, actually). As of a couple of weeks ago, the kernel bug still existed in ubuntu 11.04, and to my knowledge, this is the only affected major version. We're in the process of moving to ubuntu 10.10 (mostly specifically because of this bug), which is the most recent LTS release, and not affected by the signal trapping bug.
>>
>> --
>> Eric Wong
>> _______________________________________________
>> Unicorn mailing list - mongrel-unicorn at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/mongrel-unicorn
>> Do not quote signatures (like this one) or top post when replying
>>
>