Diff Report
Run #519c116ac5313: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c146573182: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c116ac5313Run #519c146573182DiffDiff%
Number of Function Calls108 108 0 0.0%
Incl. Wall Time (microsec)20,080 20,364 284 1.4%
Incl. Wall Time (microsec) per call 186 189 3 1.4%
Excl. Wall Time (microsec)2,198 2,248 50 2.3%
Incl. CPU (microsecs)17,354 17,989 635 3.7%
Incl. CPU (microsecs) per call 161 167 6 3.7%
Excl. CPU (microsec)2,013 2,092 79 3.9%
Incl. MemUse (bytes)990,748 990,780 32 0.0%
Incl. MemUse (bytes) per call 9,174 9,174 0 0.0%
Excl. MemUse (bytes)-351,508 -351,500 8 0.0%
Incl. PeakMemUse (bytes)1,427,620 1,427,588 -32 -0.0%
Incl. PeakMemUse (bytes) per call 13,219 13,218 -0 -0.0%
Excl. PeakMemUse (bytes)5,800 5,800 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% 284 0.5% 635 1.0% 32 0.0% -32 -0.0%
Exclusive Metrics Diff for Current Function50 17.6% 79 12.4% 8 25.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 284 100.0% 635 100.0% 32 100.0% -32 -100.0%
Child functions
unserialize0 N/A% 467 164.4% 451 71.0% 24 75.0% -56 -175.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -240 -84.5% 91 14.3% 0 0.0% 24 75.0%
explode0 N/A% 7 2.5% 14 2.2% 0 0.0% 0 0.0%