Diff Report
Run #519c13f61d210: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c116ac5313: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c13f61d210Run #519c116ac5313DiffDiff%
Number of Function Calls108 108 0 0.0%
Incl. Wall Time (microsec)20,223 20,080 -143 -0.7%
Incl. Wall Time (microsec) per call 187 186 -1 -0.7%
Excl. Wall Time (microsec)2,258 2,198 -60 -2.7%
Incl. CPU (microsecs)17,473 17,354 -119 -0.7%
Incl. CPU (microsecs) per call 162 161 -1 -0.7%
Excl. CPU (microsec)2,091 2,013 -78 -3.7%
Incl. MemUse (bytes)990,748 990,748 0 0.0%
Incl. MemUse (bytes) per call 9,174 9,174 0 0.0%
Excl. MemUse (bytes)-351,508 -351,508 0 0.0%
Incl. PeakMemUse (bytes)1,427,620 1,427,620 0 0.0%
Incl. PeakMemUse (bytes) per call 13,219 13,219 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% -143 -15.7% -119 -16.7% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-60 -42.0% -78 -65.5% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -143 -100.0% -119 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -53 -37.1% -17 -14.3% 0 N/A% 0 N/A%
unserialize0 N/A% -25 -17.5% -15 -12.6% 0 N/A% 0 N/A%
explode0 N/A% -5 -3.5% -9 -7.6% 0 N/A% 0 N/A%