[Varnish] #85: High number of "worker threads not created" and "overflowed work requests"

[Varnish]

#85: High number of "worker threads not created" and "overflowed work requests"
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 Reporter:  Thias     |        Owner:  phk
     Type:  defect    |       Status:  new
 Priority:  normal    |    Milestone:     
Component:  varnishd  |      Version:  1.0
 Severity:  normal    |   Resolution:     
 Keywords:            |  
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Comment (by phk):

 Varnishhist shows you the time from reception of request to ready to send
 answer in seconds for hits and misses.

 Left hand side is 1e-5 [s] = 10 microseconds, right hand side is 1e2 [s] =
 100 seconds.

 The graph you show there is close to perfect.

 Try setting the maximum number of threads to 230 so that varnish doesn't
 waste time trying to create  more threads that won't fit, and then keep an
 eye on varnishhist to see if your responsetime suffers.

 Also, consider running varnishd with '-d -d' option during testing like
 this, it will give you a hand CLI to query/change parameters on the fly
 and additional debug messages as well.

 Poul-Henning

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Ticket URL: <http://varnish.projects.linpro.no/ticket/85>
Varnish <http://varnish.projects.linpro.no/>
The Varnish HTTP Accelerator