[Varnish] #572: Fix for: Create worker thread failed 11 Resource temporarily unavailable (Thread Problem on Linux)

[Varnish]

#572: Fix for: Create worker thread failed 11 Resource temporarily unavailable
(Thread Problem on Linux)
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 Reporter:  whocares     |        Owner:  phk  
     Type:  enhancement  |       Status:  new  
 Priority:  normal       |    Milestone:       
Component:  varnishd     |      Version:  trunk
 Severity:  normal       |   Resolution:       
 Keywords:               |  
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Comment (by whocares):

 | The reason you can't have more is that you run out of pids. There are
 only 32k of those.
 | (I can create 32k-ish threads on my laptop with 8MB stack size just
 fine.)

 I'd say the number of available PIDs isn't the limit there. Even if I do a
 'sysctl -w kernel.pid_max=4194303' to increase the amount of available
 PIDs I'll end up with around 32k threads max. Ok, it'll allow for roughly
 600 threads more than with the standard settings but that's only such a
 marginal improvement that it suggests that I'm still running into some
 kind of memory limit there.

 And yes, I'd love to use a 64bit system. Unfortunately, this won't happen
 - at least not with this specific installation. Not in the foreseeable
 future anyway.

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Ticket URL: <http://varnish.projects.linpro.no/ticket/572#comment:4>
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