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

Drupal\Core\Lock\DatabaseLockBackend::acquireRun #51ec3c5ab9ae4Run #51ec3b81ad265DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)993 975 -18 -1.8%
Incl. Wall Time (microsec) per call 993 975 -18 -1.8%
Excl. Wall Time (microsec)37 30 -7 -18.9%
Incl. CPU (microsecs)455 428 -27 -5.9%
Incl. CPU (microsecs) per call 455 428 -27 -5.9%
Excl. CPU (microsec)32 27 -5 -15.6%
Incl. MemUse (bytes)67,696 67,704 8 0.0%
Incl. MemUse (bytes) per call 67,696 67,704 8 0.0%
Excl. MemUse (bytes)1,568 1,568 0 0.0%
Incl. PeakMemUse (bytes)45,360 45,072 -288 -0.6%
Incl. PeakMemUse (bytes) per call 45,360 45,072 -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 Function-7 -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%