On Fri, Sep 15, 2006 at 03:02:11PM +0200, Jacob Atzen wrote:
> A little heads-up before the weekend, I've been running with the above
> modifications and a few more to make the mutex calls run. So far I've
> been processing ~28000 rails requests on a mongrel with a limit of 64
> processors. I will perform further testing and supply a full diff of my
> modifications early next week.
I have now performed some more extensive testing based on the
suggestions by Kirk and have found Mongrel crashing when I raise the
number of processors. I have attached a diff of my altarations to
rails.rb in case anyone is interested. So alas, this did not cure the problems.
I will try to upgrade mongrel to the new release and see how that holds up.
Here is a snippet from mongrel.log up to the point where Mongrel crashed:
Server overloaded with 512 processors (512 max). Dropping connection.
Fri Sep 15 21:45:46 CEST 2006: Reaping 512 threads for slow workers because of
'max processors'
Thread #<Thread:0x8dc971c sleep> is too old, killing.
Fri Sep 15 21:45:46 CEST 2006: Error calling Dispatcher.dispatch
#<Mongrel::TimeoutError: Mongrel timed out this thread: max processors>
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:637:in `lock'
/usr/local/lib/ruby/1.8/thread.rb:133:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/rails.rb:88:in
`process'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:580:in
`process_client'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:579:in
`process_client'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:686:in `run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:686:in `run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:673:in `run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/configurator.rb:267:in
`run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/configurator.rb:266:in
`run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/bin/mongrel_rails:127:in
`run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/command.rb:203:in
`run'
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/bin/mongrel_rails:231
/usr/local/bin/mongrel_rails:18
Thread #<Thread:0x8fcf14c run> is too old, killing.
Fri Sep 15 21:45:46 CEST 2006: ERROR: Mongrel timed out this thread: max
processors
Thread #<Thread:0x8cc6b6c dead> is too old, killing.
Thread #<Thread:0x8d15050 dead> is too old, killing.
Thread #<Thread:0x8f294e0 dead> is too old, killing.
Thread #<Thread:0x8f6c394 dead> is too old, killing.
Thread #<Thread:0x8fac7c8 dead> is too old, killing.
Thread #<Thread:0x8fc41c0 dead> is too old, killing.
Thread #<Thread:0x8fc8590 dead> is too old, killing.
Thread #<Thread:0x8fd0830 run> is too old, killing.
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:637:in `run':
Mongrel timed out this thread: max processors (Mongrel::T
imeoutError)
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:686:in `run'
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel.rb:673:in `run'
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/configurator.rb:267:in
`run'
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/configurator.rb:266:in
`run'
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/bin/mongrel_rails:127:in
`run'
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/lib/mongrel/command.rb:203:in
`run'
from
/usr/local/lib/ruby/gems/1.8/gems/mongrel-0.3.13.4/bin/mongrel_rails:231
from /usr/local/bin/mongrel_rails:18
--
Cheers,
- Jacob Atzen
9c9
< require 'sync'
---
> require 'thread'
45c45
< @guard = Sync.new
---
> @guard = Mutex.new
83c83
< @guard.synchronize(:EX) {
---
> @guard.synchronize {
100c100
< STDERR.puts "#{Time.now}: [EMAIL PROTECTED] threads sync_waiting
for #{event}, #{self.listener.workers.list.length} still active in mongrel."
---
> #STDERR.puts "#{Time.now}: [EMAIL PROTECTED] threads sync_waiting
> for #{event}, #{self.listener.workers.list.length} still active in mongrel."
_______________________________________________
Mongrel-users mailing list
Mongrel-users@rubyforge.org
http://rubyforge.org/mailman/listinfo/mongrel-users
