Diff Report
Run #519d9cf28420e: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d9d94433aa: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519d9cf28420eRun #519d9d94433aaDiffDiff%
Number of Function Calls108 108 0 0.0%
Incl. Wall Time (microsec)25,953 26,739 786 3.0%
Incl. Wall Time (microsec) per call 240 248 7 3.0%
Excl. Wall Time (microsec)1,656 1,661 5 0.3%
Incl. CPU (microsecs)22,743 22,859 116 0.5%
Incl. CPU (microsecs) per call 211 212 1 0.5%
Excl. CPU (microsec)1,520 1,550 30 2.0%
Incl. MemUse (bytes)2,457,560 2,457,728 168 0.0%
Incl. MemUse (bytes) per call 22,755 22,757 2 0.0%
Excl. MemUse (bytes)-320,760 -320,760 0 0.0%
Incl. PeakMemUse (bytes)2,672,352 2,743,056 70,704 2.6%
Incl. PeakMemUse (bytes) per call 24,744 25,399 655 2.6%
Excl. PeakMemUse (bytes)6,872 6,912 40 0.6%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::prepareItem [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\Cache\DatabaseBackend::prepareItem0 N/A% 786 31.2% 116 12.3% 168 0.2% 70,704 98.2%
Exclusive Metrics Diff for Current Function5 0.6% 30 25.9% 0 0.0% 40 0.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 786 100.0% 116 100.0% 168 100.0% 70,704 100.0%
Child functions
unserialize0 N/A% 690 87.8% -48 -41.4% 152 90.5% 70,136 99.2%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 88 11.2% 133 114.7% 16 9.5% 480 0.7%
explode0 N/A% 3 0.4% 1 0.9% 0 0.0% 48 0.1%