[Varnish] #599: WRK_Queue should prefer thread pools with idle threads / improve thread pool loadbalancing

[Varnish]

#599: WRK_Queue should prefer thread pools with idle threads / improve thread
pool loadbalancing
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 Reporter:  slink        |       Owner:  phk  
     Type:  enhancement  |      Status:  new  
 Priority:  high         |   Milestone:       
Component:  varnishd     |     Version:  trunk
 Severity:  normal       |    Keywords:       
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Comment(by slink):

 I've reviewed the patch again, updated it for the current trunk r5430 and
 added some more comments.
 It this point I think that the implementation won't need any more more
 sophistication. A good scheduler will always re-schedule warm threads, and
 because we're using qp->idle as a stack, we will prefer warm threads.
 Ideally, we will have one pool per cpu (as configured by the admin), but
 nailing them down would probably be counter-productive.

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Ticket URL: <http://varnish-cache.org/trac/ticket/599#comment:3>
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