Diff Report
Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3c5ab9ae4: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Lock\DatabaseLockBackend::acquire

Drupal\Core\Lock\DatabaseLockBackend::acquireRun #51ec3b81ad265Run #51ec3c5ab9ae4DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)975 993 18 1.8%
Incl. Wall Time (microsec) per call 975 993 18 1.8%
Excl. Wall Time (microsec)30 37 7 23.3%
Incl. CPU (microsecs)428 455 27 6.3%
Incl. CPU (microsecs) per call 428 455 27 6.3%
Excl. CPU (microsec)27 32 5 18.5%
Incl. MemUse (bytes)67,704 67,696 -8 -0.0%
Incl. MemUse (bytes) per call 67,704 67,696 -8 -0.0%
Excl. MemUse (bytes)1,568 1,568 0 0.0%
Incl. PeakMemUse (bytes)45,072 45,360 288 0.6%
Incl. PeakMemUse (bytes) per call 45,072 45,360 288 0.6%
Excl. PeakMemUse (bytes)1,480 1,480 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Lock\DatabaseLockBackend::acquire [View Callgraph Diff]


Function NameCalls DiffCalls
Diff%		Incl. Wall
Diff
(microsec)		IWall
Diff%		Incl. CPU Diff
(microsec)		ICpu
Diff%		Incl.
MemUse
Diff
(bytes)		IMemUse
Diff%		Incl.
PeakMemUse
Diff
(bytes)		IPeakMemUse
Diff%
Current Function
Drupal\Core\Lock\DatabaseLockBackend::acquire0 N/A% 18 4.8% 27 2.5% -8 -0.0% 288 0.8%
Exclusive Metrics Diff for Current Function7 38.9% 5 18.5% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\CacheCollector::updateCache0 N/A% 18 100.0% 27 100.0% -8 -100.0% 288 100.0%
Child functions
db_insert0 N/A% 30 166.7% 32 118.5% 0 0.0% 16 5.6%
Drupal\Core\Database\Driver\mysql\Insert::execute0 N/A% -27 -150.0% -17 -63.0% -8 -100.0% 272 94.4%
Drupal\Core\Database\Query\Insert::fields0 N/A% 5 27.8% 4 14.8% 0 0.0% 0 0.0%
Drupal\Core\Lock\LockBackendAbstract::getLockId0 N/A% 4 22.2% 5 18.5% 0 0.0% 0 0.0%
microtime0 N/A% -1 -5.6% -1 -3.7% 0 0.0% 0 0.0%
max0 N/A% 0 0.0% -1 -3.7% 0 0.0% 0 0.0%