Diff Report
Run #51ec66a5a877d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec623000e0c: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Lock\DatabaseLockBackend::acquire

Drupal\Core\Lock\DatabaseLockBackend::acquireRun #51ec66a5a877dRun #51ec623000e0cDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)2,286 2,288 2 0.1%
Incl. Wall Time (microsec) per call 2,286 2,288 2 0.1%
Excl. Wall Time (microsec)39 43 4 10.3%
Incl. CPU (microsecs)452 472 20 4.4%
Incl. CPU (microsecs) per call 452 472 20 4.4%
Excl. CPU (microsec)29 36 7 24.1%
Incl. MemUse (bytes)67,696 67,696 0 0.0%
Incl. MemUse (bytes) per call 67,696 67,696 0 0.0%
Excl. MemUse (bytes)1,568 1,568 0 0.0%
Incl. PeakMemUse (bytes)23,512 39,328 15,816 67.3%
Incl. PeakMemUse (bytes) per call 23,512 39,328 15,816 67.3%
Excl. PeakMemUse (bytes)856 1,824 968 113.1%

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% 2 0.1% 20 0.6% 0 0.0% 15,816 21.7%
Exclusive Metrics Diff for Current Function4 200.0% 7 35.0% 0 N/A% 968 6.1%
Parent function
Drupal\Core\Cache\CacheCollector::updateCache0 N/A% 2 100.0% 20 100.0% 0 N/A% 15,816 100.0%
Child functions
Drupal\Core\Database\Driver\mysql\Insert::execute0 N/A% -13 -650.0% 4 20.0% 0 N/A% -736 -4.7%
db_insert0 N/A% 10 500.0% 9 45.0% 0 N/A% 12,288 77.7%
Drupal\Core\Database\Query\Insert::fields0 N/A% 2 100.0% 2 10.0% 0 N/A% 56 0.4%
Drupal\Core\Lock\LockBackendAbstract::getLockId0 N/A% -1 -50.0% -1 -5.0% 0 N/A% 3,240 20.5%
microtime0 N/A% 0 0.0% 0 0.0% 0 N/A% 0 0.0%
max0 N/A% 0 0.0% -1 -5.0% 0 N/A% 0 0.0%