Diff Report
Run #51af435181b2e: 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 #51af435181b2eRun #51af3d98520b7DiffDiff%
Number of Function Calls47 47 0 0.0%
Incl. Wall Time (microsec)20,354 20,177 -177 -0.9%
Incl. Wall Time (microsec) per call 433 429 -4 -0.9%
Excl. Wall Time (microsec)773 795 22 2.8%
Incl. CPU (microsecs)17,806 18,047 241 1.4%
Incl. CPU (microsecs) per call 379 384 5 1.4%
Excl. CPU (microsec)749 756 7 0.9%
Incl. MemUse (bytes)1,848,144 1,847,544 -600 -0.0%
Incl. MemUse (bytes) per call 39,322 39,309 -13 -0.0%
Excl. MemUse (bytes)-116,640 -116,528 112 0.1%
Incl. PeakMemUse (bytes)2,038,720 2,037,928 -792 -0.0%
Incl. PeakMemUse (bytes) per call 43,377 43,360 -17 -0.0%
Excl. PeakMemUse (bytes)4,888 4,816 -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 Function22 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%