c# - How do I debug an unresponsive .Net Service when "break all" does not respond? -


we have wcf service application consuming large amount of memory (see other ticket today at: server leaking memory; process looks fine).

after extensive use of windows service application @ sudden moment whole service crashes. during moment:

  • the log (wcf-trace/server db log) display activity, no leads.
  • the memory high, no out of memory exception server leaking memory; process looks fine
  • number of open connections; before 'the crash': 10 - 20 memory dump shows 8 threads, without interesting stack trace. these small stacks, without user code (only calls in microsoft-symbols)

can do:

  • attach remote debugger;
  • connect port wcf listing to;

can't do:

  • remote debugger; break not respond
  • attach scitechmemoryprofiler (exception: 0x80007002)
  • response call of wcf;

the memory still in use, server unresponsive.

thanks reading ticket.

we found solution. analyzed dump file windebug, , found single function in dump. don't know if luck or expected behaviour windows service in .net , there able replicate issue.

thanks reading, , can make progress 'solution'.


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