# Deadlock in ferret server running in Cygwin

**URL:** <https://www.ruby-forum.com/t/deadlock-in-ferret-server-running-in-cygwin/137538>\
**Category:** Ferret\
**Created:** [May 14, 2008, 1:45am UTC](https://www.ruby-forum.com/t/deadlock-in-ferret-server-running-in-cygwin/137538 "2008-05-14T01:45:52Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![secobarbital](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/e79b87/32.png) [@secobarbital](https://www.ruby-forum.com/u/secobarbital)\
**Post date:** [May 14, 2008, 1:45am UTC](https://www.ruby-forum.com/t/deadlock-in-ferret-server-running-in-cygwin/137538/1 "2008-05-14T01:45:52Z")

</div>

Hi everyone,

We are having instability running the acts\_as\_ferret DRb server on  
Cygwin, with the ferret server crashing after a variable amount of time,  
from as little as 2 hours to as much as a week. This is what we get from  
the server:

deadlock 0x7f2eb13c: sleep:F(14) - /usr/lib/ruby/1.8/drb/drb.rb:566  
deadlock 0x7ed56fb4: sleep:F(13) - /usr/lib/ruby/1.8/drb/drb.rb:566  
deadlock 0x7ee1d7e0: sleep:F(9) - /usr/lib/ruby/1.8/drb/drb.rb:566  
deadlock 0x7eee57a4: sleep:F(8) - /usr/lib/ruby/1.8/drb/drb.rb:566  
deadlock 0x7ef716f0: sleep:F(7) - /usr/lib/ruby/1.8/drb/drb.rb:566  
deadlock 0x7ee9d88c: sleep:F(4) - /usr/lib/ruby/1.8/drb/drb.rb:944  
deadlock 0x1043c8e8: sleep:J(0x7ef77b54) (main) -  
/coupa/script/ferret\_server:7  
deadlock 0x7ef77b54: sleep:F(6) - /usr/lib/ruby/1.8/drb/drb.rb:944  
/usr/lib/ruby/1.8/drb/drb.rb:1581: Thread(0x7eddd4c4): deadlock (fatal)

Note that the ferret\_server script is a minimal shell for running as a  
service in Windows:

#!/usr/bin/env ruby

require File.join(File.dirname( **FILE** ), ‘…/config/boot’)  
require File.join(File.dirname( **FILE** ), ‘…/config/environment’)

ActsAsFerret::Remote::Server.start  
DRb.thread.join

I found an almost identical stack trace in this thread:

[http://www.ruby-forum.com/topic/150473](http://www.ruby-forum.com/topic/150473)

But that was happening in the native Windows port of Ruby, and the final  
solution was specific to Windows. We also took the advice given in that  
thread to upgrade Ruby, so this is our setup:

1. acts\_as\_ferret 0.4.1
2. ferret 0.11.6
3. ruby 1.8.6p114
4. Cygwin DLL version: 1.5.25
5. Windows 2003 Server Ver 5.2 Build 3790 Service Pack 2

Anybody else running ferret drb server on Cygwin?

---

<div class="post-metadata">

**Author:** ![secobarbital](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/e79b87/32.png) [@secobarbital](https://www.ruby-forum.com/u/secobarbital)\
**Post date:** [May 14, 2008, 2:17am UTC](https://www.ruby-forum.com/t/deadlock-in-ferret-server-running-in-cygwin/137538/2 "2008-05-14T02:17:47Z")

</div>

Here’s our ruby -v:

ruby 1.8.6 (2008-03-03 patchlevel 114) [i386-cygwin]