[Varnish] #1788: ObjIter has terrible performance profile when busyobj != NULL

[Varnish]

#1788: ObjIter has terrible performance profile when busyobj != NULL
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 Reporter:  tnt     |       Owner:  Poul-Henning Kamp <phk@…>
     Type:  defect  |      Status:  closed
 Priority:  normal  |   Milestone:
Component:  build   |     Version:  4.0.3
 Severity:  normal  |  Resolution:  fixed
 Keywords:          |
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Comment (by Lasse Karstensen <lkarsten@…>):

 In [a6bf9db091e8c039ecdc191a6916c72ccc5315ed]:
 {{{
 #!CommitTicketReference repository=""
 revision="a6bf9db091e8c039ecdc191a6916c72ccc5315ed"
 Cache a checkpoint when we iterate over busy objects, so we don't
 have to walk the full list all the time.

 This is a minimal fix for backporting to 4.1.x

 Fixes:  #1798
 Fixes:  #1788
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1788#comment:3>
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