Diff Report
Run #51af430daedb2: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51af3d98520b7: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51af430daedb2Run #51af3d98520b7DiffDiff%
Number of Function Calls47 47 0 0.0%
Incl. Wall Time (microsec)20,523 20,177 -346 -1.7%
Incl. Wall Time (microsec) per call 437 429 -7 -1.7%
Excl. Wall Time (microsec)803 795 -8 -1.0%
Incl. CPU (microsecs)18,105 18,047 -58 -0.3%
Incl. CPU (microsecs) per call 385 384 -1 -0.3%
Excl. CPU (microsec)773 756 -17 -2.2%
Incl. MemUse (bytes)1,847,544 1,847,544 0 0.0%
Incl. MemUse (bytes) per call 39,309 39,309 0 0.0%
Excl. MemUse (bytes)-116,528 -116,528 0 0.0%
Incl. PeakMemUse (bytes)2,037,928 2,037,928 0 0.0%
Incl. PeakMemUse (bytes) per call 43,360 43,360 0 0.0%
Excl. PeakMemUse (bytes)4,816 4,816 0 0.0%

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% -346 -25.6% -58 -3.2% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-8 -2.3% -17 -29.3% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -346 -100.0% -58 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -254 -73.4% -109 -187.9% 0 N/A% 0 N/A%
unserialize0 N/A% -95 -27.5% 53 91.4% 0 N/A% 0 N/A%
explode0 N/A% 11 3.2% 15 25.9% 0 N/A% 0 N/A%