Diff Report
Run #519fbb3f5c2a0: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fbca569199: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fbb3f5c2a0Run #519fbca569199DiffDiff%
Number of Function Calls84 84 0 0.0%
Incl. Wall Time (microsec)21,248 20,586 -662 -3.1%
Incl. Wall Time (microsec) per call 253 245 -8 -3.1%
Excl. Wall Time (microsec)1,181 1,166 -15 -1.3%
Incl. CPU (microsecs)19,240 18,787 -453 -2.4%
Incl. CPU (microsecs) per call 229 224 -5 -2.4%
Excl. CPU (microsec)1,081 1,070 -11 -1.0%
Incl. MemUse (bytes)1,718,480 1,718,480 0 0.0%
Incl. MemUse (bytes) per call 20,458 20,458 0 0.0%
Excl. MemUse (bytes)-228,344 -228,344 0 0.0%
Incl. PeakMemUse (bytes)1,797,288 1,797,288 0 0.0%
Incl. PeakMemUse (bytes) per call 21,396 21,396 0 0.0%
Excl. PeakMemUse (bytes)6,088 6,088 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% -662 -103.9% -453 -157.8% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-15 -2.3% -11 -2.4% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -662 -100.0% -453 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% -892 -134.7% -531 -117.2% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 246 37.2% 96 21.2% 0 N/A% 0 N/A%
explode0 N/A% -1 -0.2% -7 -1.5% 0 N/A% 0 N/A%