Diff Report
Run #52e49b28a90e1: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e49acfb0eb8: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #52e49b28a90e1Run #52e49acfb0eb8DiffDiff%
Number of Function Calls69 69 0 0.0%
Incl. Wall Time (microsec)7,947 7,995 48 0.6%
Incl. Wall Time (microsec) per call 115 116 1 0.6%
Excl. Wall Time (microsec)753 765 12 1.6%
Incl. CPU (microsecs)7,035 7,080 45 0.6%
Incl. CPU (microsecs) per call 102 103 1 0.6%
Excl. CPU (microsec)663 692 29 4.4%
Incl. MemUse (bytes)1,388,488 1,388,488 0 0.0%
Incl. MemUse (bytes) per call 20,123 20,123 0 0.0%
Excl. MemUse (bytes)-202,984 -202,984 0 0.0%
Incl. PeakMemUse (bytes)1,865,696 1,865,696 0 0.0%
Incl. PeakMemUse (bytes) per call 27,039 27,039 0 0.0%
Excl. PeakMemUse (bytes)7,312 7,312 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% 48 16.8% 45 10.6% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function12 25.0% 29 64.4% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 48 100.0% 45 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 37 77.1% 24 53.3% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -2 -4.2% -13 -28.9% 0 N/A% 0 N/A%
explode0 N/A% 1 2.1% 5 11.1% 0 N/A% 0 N/A%