apc_sma_info() / apc_cache_info() are missing keys

[devurandom]

Running Phabricator, HHVM 3.7.1 logs following errors:

-> ERROR 8: Undefined index: num_seg at [/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorDataCacheSpec.php:77]
arcanist(head=master, ref.master=9a7c4d87a850), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=master, ref.master=ee11587c19c7), phutil(head=master, ref.master=3b4da3f33153), sprint(head=master, ref.master=ba0d4c2d46da)
  #0 PhabricatorDataCacheSpec::initAPCCommonSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorDataCacheSpec.php:38]
  #1 PhabricatorDataCacheSpec::initAPCSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorDataCacheSpec.php:21]                                                                                                                                               
  #2 PhabricatorDataCacheSpec::getActiveCacheSpec() called at [<phabricator>/src/applications/config/check/PhabricatorCacheSetupCheck.php:11]
  #3 PhabricatorCacheSetupCheck::executeChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:45]
  #4 PhabricatorSetupCheck::runSetupChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:133]
  #5 PhabricatorSetupCheck::runAllChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:91]
  #6 PhabricatorSetupCheck::willProcessRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:94]
  #7 AphrontApplicationConfiguration::runHTTPRequest() called at [<phabricator>/webroot/index.php:21]
-> ERROR 8: Undefined index: seg_size at [/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorDataCacheSpec.php:77]
arcanist(head=master, ref.master=9a7c4d87a850), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=master, ref.master=ee11587c19c7), phutil(head=master, ref.master=3b4da3f33153), sprint(head=master, ref.master=ba0d4c2d46da)
  #0 PhabricatorDataCacheSpec::initAPCCommonSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorDataCacheSpec.php:38]
  #1 PhabricatorDataCacheSpec::initAPCSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorDataCacheSpec.php:21]
  #2 PhabricatorDataCacheSpec::getActiveCacheSpec() called at [<phabricator>/src/applications/config/check/PhabricatorCacheSetupCheck.php:11]
  #3 PhabricatorCacheSetupCheck::executeChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:45]
  #4 PhabricatorSetupCheck::runSetupChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:133]
  #5 PhabricatorSetupCheck::runAllChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:91]
  #6 PhabricatorSetupCheck::willProcessRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:94]
  #7 AphrontApplicationConfiguration::runHTTPRequest() called at [<phabricator>/webroot/index.php:21]                                                                                                                                                                            
-> ERROR 8: Undefined index: mem_size at [/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorDataCacheSpec.php:80]
arcanist(head=master, ref.master=9a7c4d87a850), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=master, ref.master=ee11587c19c7), phutil(head=master, ref.master=3b4da3f33153), sprint(head=master, ref.master=ba0d4c2d46da)
  #0 PhabricatorDataCacheSpec::initAPCCommonSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorDataCacheSpec.php:38]
  #1 PhabricatorDataCacheSpec::initAPCSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorDataCacheSpec.php:21]
  #2 PhabricatorDataCacheSpec::getActiveCacheSpec() called at [<phabricator>/src/applications/config/check/PhabricatorCacheSetupCheck.php:11]
  #3 PhabricatorCacheSetupCheck::executeChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:45]
  #4 PhabricatorSetupCheck::runSetupChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:133]
  #5 PhabricatorSetupCheck::runAllChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:91]
  #6 PhabricatorSetupCheck::willProcessRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:94]
  #7 AphrontApplicationConfiguration::runHTTPRequest() called at [<phabricator>/webroot/index.php:21]

apc_sma_info() is missing the keys num_seg and seg_size, while apc_cache_info() is missing the key mem_size.

See-Also: https://secure.phabricator.com/T8579
See-Also: #1853

[devurandom]

Persists in 3.7.3.

[paulbiss]

apc_sma_info appears to be unimplemented, while apc_cache_info should have that key.

[devurandom]

Log from today - the server is running hhvm-3.7.3~jessie:

[2015-07-20 20:32:50] ERROR 8: Undefined index: num_seg at [/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php:29]
arcanist(head=stable, ref.master=999eb9376568, ref.stable=d54cb072facd), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=stable, ref.master=f0bf7a8e2621, ref.stable=2e82fb07cdc1), phutil(head=stable, ref.master=aa6cd8f7e5e5, ref.stable=83f09f6c5a03), sprint(head=production, ref.master=4912ecf41ef1, ref.production=2846fc28ae19)
  #0 PhabricatorOpcodeCacheSpec::initAPCSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php:10]
  #1 PhabricatorOpcodeCacheSpec::getActiveCacheSpec() called at [<phabricator>/src/applications/config/check/PhabricatorCacheSetupCheck.php:10]
  #2 PhabricatorCacheSetupCheck::executeChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:45]
  #3 PhabricatorSetupCheck::runSetupChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:133]
  #4 PhabricatorSetupCheck::runAllChecks() called at [<phabricator>/src/applications/config/controller/PhabricatorConfigIssueViewController.php:16]
  #5 PhabricatorConfigIssueViewController::processRequest() called at [<phabricator>/src/aphront/AphrontController.php:33]
  #6 AphrontController::handleRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:226]
  #7 AphrontApplicationConfiguration::processRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:140]
  #8 AphrontApplicationConfiguration::runHTTPRequest() called at [<phabricator>/webroot/index.php:21]
[2015-07-20 20:32:50] ERROR 8: Undefined index: seg_size at [/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php:29]
arcanist(head=stable, ref.master=999eb9376568, ref.stable=d54cb072facd), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=stable, ref.master=f0bf7a8e2621, ref.stable=2e82fb07cdc1), phutil(head=stable, ref.master=aa6cd8f7e5e5, ref.stable=83f09f6c5a03), sprint(head=production, ref.master=4912ecf41ef1, ref.production=2846fc28ae19)
  #0 PhabricatorOpcodeCacheSpec::initAPCSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php:10]
  #1 PhabricatorOpcodeCacheSpec::getActiveCacheSpec() called at [<phabricator>/src/applications/config/check/PhabricatorCacheSetupCheck.php:10]
  #2 PhabricatorCacheSetupCheck::executeChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:45]
  #3 PhabricatorSetupCheck::runSetupChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:133]
  #4 PhabricatorSetupCheck::runAllChecks() called at [<phabricator>/src/applications/config/controller/PhabricatorConfigIssueViewController.php:16]
  #5 PhabricatorConfigIssueViewController::processRequest() called at [<phabricator>/src/aphront/AphrontController.php:33]
  #6 AphrontController::handleRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:226]
  #7 AphrontApplicationConfiguration::processRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:140]
  #8 AphrontApplicationConfiguration::runHTTPRequest() called at [<phabricator>/webroot/index.php:21]
[2015-07-20 20:32:50] ERROR 8: Undefined index: mem_size at [/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php:32]
arcanist(head=stable, ref.master=999eb9376568, ref.stable=d54cb072facd), libphremoteuser(head=master, ref.master=1def4e2d7f07), phabricator(head=stable, ref.master=f0bf7a8e2621, ref.stable=2e82fb07cdc1), phutil(head=stable, ref.master=aa6cd8f7e5e5, ref.stable=83f09f6c5a03), sprint(head=production, ref.master=4912ecf41ef1, ref.production=2846fc28ae19)
  #0 PhabricatorOpcodeCacheSpec::initAPCSpec() called at [<phabricator>/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php:10]
  #1 PhabricatorOpcodeCacheSpec::getActiveCacheSpec() called at [<phabricator>/src/applications/config/check/PhabricatorCacheSetupCheck.php:10]
  #2 PhabricatorCacheSetupCheck::executeChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:45]
  #3 PhabricatorSetupCheck::runSetupChecks() called at [<phabricator>/src/applications/config/check/PhabricatorSetupCheck.php:133]
  #4 PhabricatorSetupCheck::runAllChecks() called at [<phabricator>/src/applications/config/controller/PhabricatorConfigIssueViewController.php:16]
  #5 PhabricatorConfigIssueViewController::processRequest() called at [<phabricator>/src/aphront/AphrontController.php:33]
  #6 AphrontController::handleRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:226]
  #7 AphrontApplicationConfiguration::processRequest() called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:140]
  #8 AphrontApplicationConfiguration::runHTTPRequest() called at [<phabricator>/webroot/index.php:21]

/opt/phabricator/phabricator/src/applications/cache/spec/PhabricatorOpcodeCacheSpec.php lines 28-32:

      $mem = apc_sma_info();
      $this->setTotalMemory($mem['num_seg'] * $mem['seg_size']);

      $info = apc_cache_info();
      $this->setUsedMemory($info['mem_size']);