Diff Report
Run #531ccb2cb8e3d: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #531ccbd4518b6: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #531ccb2cb8e3dRun #531ccbd4518b6DiffDiff%
Number of Function Calls70 70 0 0.0%
Incl. Wall Time (microsec)11,144 11,061 -83 -0.7%
Incl. Wall Time (microsec) per call 159 158 -1 -0.7%
Excl. Wall Time (microsec)748 732 -16 -2.1%
Incl. CPU (microsecs)9,819 9,745 -74 -0.8%
Incl. CPU (microsecs) per call 140 139 -1 -0.8%
Excl. CPU (microsec)649 637 -12 -1.8%
Incl. MemUse (bytes)2,239,888 2,240,512 624 0.0%
Incl. MemUse (bytes) per call 31,998 32,007 9 0.0%
Excl. MemUse (bytes)-282,352 -282,520 -168 -0.1%
Incl. PeakMemUse (bytes)2,633,568 2,632,488 -1,080 -0.0%
Incl. PeakMemUse (bytes) per call 37,622 37,607 -15 -0.0%
Excl. PeakMemUse (bytes)7,800 7,576 -224 -2.9%

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% -83 -84.7% -74 -28.4% 624 1.6% -1,080 -2.7%
Exclusive Metrics Diff for Current Function-16 -19.3% -12 -16.2% -168 -26.9% -224 -20.7%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -83 -100.0% -74 -100.0% 624 100.0% -1,080 -100.0%
Child functions
unserialize0 N/A% -92 -110.8% -89 -120.3% 800 128.2% -424 -39.3%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 26 31.3% 29 39.2% 0 0.0% -472 -43.7%
explode0 N/A% -4 -4.8% -5 -6.8% -8 -1.3% -32 -3.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 3 3.6% 3 4.1% 0 0.0% 72 6.7%