[Varnish] #833: Panic message: Assert error in VRT_int_string()

[Varnish]

#833: Panic message: Assert error in VRT_int_string()
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 Reporter:  mandark   |       Owner:  kristian                           
     Type:  defect    |      Status:  assigned                           
 Priority:  low       |   Milestone:                                     
Component:  varnishd  |     Version:  2.1.2                              
 Severity:  normal    |    Keywords:  panic, assert error, VRT_int_string
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Comment(by mandark):

 Sorry, my VCL have a lot of changes every days, and I can't figure how it
 was this day. I'll increase sess_workspace and will reopen the ticket if
 the bug come back.
 Sorry for the missing informations )o:

 In the other hand, how can I monitor the available sess_workspace so I can
 anticipate this failure and calculate how much sess_workspace I need ?

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Ticket URL: <http://www.varnish-cache.org/trac/ticket/833#comment:4>
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The Varnish HTTP Accelerator