Diff Report
Run #519fbca569199: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fbb3f5c2a0: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip
Click a function name below to drill down.

Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fbca569199Run #519fbb3f5c2a0DiffDiff%
Number of Function Calls84 84 0 0.0%
Incl. Wall Time (microsec)20,586 21,248 662 3.2%
Incl. Wall Time (microsec) per call 245 253 8 3.2%
Excl. Wall Time (microsec)1,166 1,181 15 1.3%
Incl. CPU (microsecs)18,787 19,240 453 2.4%
Incl. CPU (microsecs) per call 224 229 5 2.4%
Excl. CPU (microsec)1,070 1,081 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 Function15 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%