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HHVM/Troubleshooting

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Revision as of 17:40, 13 May 2015 by imported>Legoktm (+APC dumping)
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Problem determination and data collection

  • hhvm-dump-debug: captures a stack trace of HHVM and writes it to stdout and to /tmp/hhvm.$PID.bt. Run hhvm-dump-debug --full to generate a core dump as well.
  • links -dump http://127.0.0.1/server-status -width 80: produce a full Apache status report, showing which requests are currently in flight.
  • furl is a cURL-like tool for FastCGI. You can use it to bypass Apache and request pages directly from HHVM. For example: furl http://en.wikipedia.org/wiki/Main_Page. Requests always go to localhost.
  • curl localhost:9002/dump-apc will dump all the current APC keys to /tmp/apc_dump.