Diff Report
Run #51af3d98520b7: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51af435181b2e: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51af3d98520b7Run #51af435181b2eDiffDiff%
Number of Function Calls47 47 0 0.0%
Incl. Wall Time (microsec)20,177 20,354 177 0.9%
Incl. Wall Time (microsec) per call 429 433 4 0.9%
Excl. Wall Time (microsec)795 773 -22 -2.8%
Incl. CPU (microsecs)18,047 17,806 -241 -1.3%
Incl. CPU (microsecs) per call 384 379 -5 -1.3%
Excl. CPU (microsec)756 749 -7 -0.9%
Incl. MemUse (bytes)1,847,544 1,848,144 600 0.0%
Incl. MemUse (bytes) per call 39,309 39,322 13 0.0%
Excl. MemUse (bytes)-116,528 -116,640 -112 -0.1%
Incl. PeakMemUse (bytes)2,037,928 2,038,720 792 0.0%
Incl. PeakMemUse (bytes) per call 43,360 43,377 17 0.0%
Excl. PeakMemUse (bytes)4,816 4,888 72 1.5%

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% 177 22.2% -241 -25.3% 600 0.9% 792 1.2%
Exclusive Metrics Diff for Current Function-22 -12.4% -7 -2.9% -112 -18.7% 72 9.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 177 100.0% -241 -100.0% 600 100.0% 792 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 151 85.3% 35 14.5% 0 0.0% -16 -2.0%
unserialize0 N/A% 61 34.5% -260 -107.9% 712 118.7% 784 99.0%
explode0 N/A% -13 -7.3% -9 -3.7% 0 0.0% -48 -6.1%